I've made 2 low-cost improvements that aid driving comfort, one for long drives and the other for around-town.
Long drives can be more comfortable by adding a foot-rest for your left foot. Mine is about the same height and angle as the accelerator pedal. Dense, closed-cell foam used for packing material can often be had in thicknesses up to 2 inches and readily can be shaped by knife to fit the curve of the floor at the far left of the footwell. Layers can be built-up using double-sticky carpet tape between foam. My foot rest is held in place with the same tape because I have an SL with rubber floor mats, not carpet. This rather soft foot-rest works because I never feel the need to push myself into the seat with it as I might in a sports car. I even found dark grey foam that matches agate.
Around-town driving can be made more comfortable by adding a spacer of wood between the clutch pedal and the pedal pad. Many trucks have a nice curve in the clutch-pedal arm near the pad so that the toe doesn't hit the arm when the pedal is fully depressed to the floor. Gen 2 trucks don't have that curve which made me want to use just the very tip of my foot on the clutch pedal and that feels insecure to me. A 3/4-inch spacer fixes this problem for me. Remove the rubber pedal-pad and trace the outline of the steel pedal for a pattern. Cut a piece of sheel metal that size and fit it to the pedal pad so that the pad is tight. Cut a piece of wood about the size of the steel pedal pad and shape it to fit the curve of the steel pedal. Drill two holes through the steel and screw the wood spacer to the steel pad. Screw the sheet steel to the wood block using counter-sunk, flat-head screws and pop on the rubber pad. Much nicer clutching around town especially when wearing work boots. Make sure that your fit is good and fasteners are secure.
Either project could be made more hi-tech but each has worked well for 40K miles and nothing I've done to improve my truck can compare for the value expended.
Long drives can be more comfortable by adding a foot-rest for your left foot. Mine is about the same height and angle as the accelerator pedal. Dense, closed-cell foam used for packing material can often be had in thicknesses up to 2 inches and readily can be shaped by knife to fit the curve of the floor at the far left of the footwell. Layers can be built-up using double-sticky carpet tape between foam. My foot rest is held in place with the same tape because I have an SL with rubber floor mats, not carpet. This rather soft foot-rest works because I never feel the need to push myself into the seat with it as I might in a sports car. I even found dark grey foam that matches agate.
Around-town driving can be made more comfortable by adding a spacer of wood between the clutch pedal and the pedal pad. Many trucks have a nice curve in the clutch-pedal arm near the pad so that the toe doesn't hit the arm when the pedal is fully depressed to the floor. Gen 2 trucks don't have that curve which made me want to use just the very tip of my foot on the clutch pedal and that feels insecure to me. A 3/4-inch spacer fixes this problem for me. Remove the rubber pedal-pad and trace the outline of the steel pedal for a pattern. Cut a piece of sheel metal that size and fit it to the pedal pad so that the pad is tight. Cut a piece of wood about the size of the steel pedal pad and shape it to fit the curve of the steel pedal. Drill two holes through the steel and screw the wood spacer to the steel pad. Screw the sheet steel to the wood block using counter-sunk, flat-head screws and pop on the rubber pad. Much nicer clutching around town especially when wearing work boots. Make sure that your fit is good and fasteners are secure.
Either project could be made more hi-tech but each has worked well for 40K miles and nothing I've done to improve my truck can compare for the value expended.