I had exactly the same issue with the engine pipe when I put the L28E into my bus, but it is an easy fix.
I also had an issue with the throttle linkage from the firwall to the manifold being about 1" to short - let me know if you also have this issue.
And finally, why such a big fuel line? I used the original bus one combined with the pump and regulator from an S130 with no supply issues.
Apologies mate didn't mean to ignore you. Definitely will let you know. Yeah I agree on the overkill on the fuel line actually Ray they guy who did it went overkill but I will reduce it down later on. 3,8 should be enough even with a L32 stroker. I was more worried about the return on the tank not being wide enough to let the fuel flow back in.