I'm working on an 88 notch 2.3, with T-5 and 4.10 gears. I made a custom 2.5 exhaust, and a larger intake pipe, advanced the ignition timing, and found that it made noticeably more power. Now I'm putting on a header from a Ranger, the newer style roller cam with an adjustable sprocket, and I'm going to modify the intake and graft on a larger throttle body, possibly a stock one from a 5.0. Does anyone have much expirience with n/a 2.3's, and know about how much rwhp I can make with this type of setup? Thanks for looking at my thread.