As I modernize my Enterprise, I'm plumbing fuel and EVAP lines into the tank in advance. It's easy enough to find a carbon can from an old GM vehicle, the early ones were just vacuum actuated from the engine so no computer needed. I've welded O2 sensor bungs into the new pipes, I can plug them til needed.
Doing the homework now, so if I get ambitious and decide to go full modern on the engine controls, the basics will already be there. And heck, it'll even do the planet a little bit of a good turn by capturing all those excess hydrocarbon emissions. I'm not putting the smog pump back on the swapped Cadillac V8 tho :-D
