TJ 4.0L Engine Installation in a YJ Wrangler-What I learned

I installed a 1999 TJ 4.0L in a 1994 YJ Wrangler. I attempted an intake manifold upgrade which failed. I did install a long tube header though.

[@neolexington]

Wow, definitely an interesting project. I have an '04 soft-top that is a spitting image of yours, half doors and all. As soon as things warm up it'll be getting it's front fenders replaced. Love the sound of that old 4.0.