The M110 exhaust is already a free flow style with exhaust separated into two banks hence the need for the exhaust change/modification.

Regarding the fuel system, I was thrown off by your mention of a 280E. You would only need to do a bit of line altering to use the existing steel lines in conjunction with an electric pump for carburetor or TBI.

95% of the parts are already there between the three vehicles. I just didn't want you to think it was just a "take this engine out and put that engine in" kind of deal. It sounds as though you've been down this road before and you have a grasp of what is involved.

I'm sure you've seen those,"Car apart for restoration, don't have the time/money/space to finish, all parts there" ads. In other words, someone took on a project they didn't realize the amount of work and time involved.

__________________
“Whatever story you're telling, it will be more interesting if, at the end you add, "and then everything burst into flames.”
― Brian P. Cleary, You Oughta Know By Now