What would happen if I used an oil filter for a Twin Cam 88 on my 96 Big Twin Evo?

Why would you???? If you want the best filtration and a little more oil capacity, use a quality oil filter that fits a 1994<up 3.8 litre Ford Mustang such as Fram CPH3600 or equivilant. Way cheaper and way better!!! It's 4.75" long so you will have to pull the stator plug to install it. The pressure relief springs are the same as H-D filters so no worries. If you don't like the colour then paint it what ever... I have been using the Fram CPH3600 with Mobile 1 (15w-50) for years now on my TOTALLY abused (enjoyed) 110 Revtech '94 FLHTC and NO problems. BONUS INFO: If you run a hi-po motor and a performance wet clutch... Try "Ford Type F" tranny fluid in your primary! No slippage! The same as B&M Trick Shift. Plus it's red so primary leaks are easy to detect. Ride Hard..........AJ