yeah i didnt know if your truck was already manual, so i posted it anyway.

you shouldnt use any existing "clutch stuff". the drivetrain should just drop in. you should be able to use your k-member, possibly have to move it an inch or 2.

why "all in line" fuel setup? that walbro i've heard is a very good pump and supports lots of hp. i wouldnt knock it based on being "inline"...course i dont know much about the inlines or their advantages.