I need guages ASAP. Added box last week and now I'm worried about pulling 5er or equipment trailer w/o guages after reading some of the horror story posts about overfueling and overboosting. Guess I got the cart before the horse but I would like to get some opinions on the guages some of you use and if you would recommend them. TIA for your help. BTW this truck hauls b*** now. I LOVE IT!