I've installed a TST #12 in basically a stock '97. (5 speed) I am running a stock exhaust, sans a muffler, and a Fleetgaurd filter dropped in the factory air box. The TST plate was installed in the same position as the stock plate. My question is, do I really need a boost gauge and an EGT? I am towing about 6,000 lbs of race car and trailer at 70 mph. I am thinking that at the min. I should install a combo. gauge. Where does the end of the EGT mount? I would imagine it would take some d&t. (drilling and tapping) Where does the boost signal source come from? What about an exhaust upgrade to 4"? recommended brands of exhaust? Recommended intakes? (instead of a stock air box and filter) Eventually I will be switching to an enclosed race car trailer, so my eventual tow weight will be around 10,000 lbs. thanks.