cheepest one i know of is taking the slack out of your throttle cable with small zap straps,by removeing the slack people are always amazed with throttle response and the way the tranny shifts.(auto trans)pull out on your accelerator and see how much slack there is.just add 1 or 2 zappers on...
hey there i found this site at f150forums. i have had a number of rangers over the years and i am building another ranger right now.hope this site is helpfull.