what are your plans for an oil pan? The truck and car pans will not work. I scored a durango pan that looks like it might work with slight modification. I also have jeep cherokee manifolds that look like they might clear as well. I am going to see if I can squeeze the pacesetter longtube headers that I have from my old truck in there. And see what mods they might need to work. They should have good ground clearance, as they don't hang below the stock truck oilpan. And they will fit inside the factory framerails. I'll keep you posted.
