Just picked up a 3500 SRW 4x4 with 5 sp and 4. 10 rear end--any ideas on which module to use to boost horsepower/torque? stock rims are 17x8 what is the largest tire I can stuff in the wheelwells without modification--Which after market air filter is best ? FYI first two tanks of fuel got me 17. 5 mpg .
Thanks in advance for all your help.
Thanks in advance for all your help.