wanting to do some mileage and performance upgrades to a 97 grand ch. with 4.0.just got it,installed k&n filter. and mobile 1synthetic oil.any ideas for cap,wires,plugs or chips.it has 126,000 miles,last owner bought it with 20000 miles on it in 99.my last one had a 318 and i didn't realize what i had.would really like to trick this 6 out.any ideas would really be appreciated.thanks,btully :?:
