RE: fuel pump questions (engine)
You're talking about a robart super-pumper right?
For the most part, whenever we were using those it was one line from tank, one to crankcase one to carb nipple and that was it. This was for a 61VF though
If you can get your tank back on the CG, you won't regret it. Just be ready to spend a little more time priming the engine as you have to suck the fuel through 12" of tube instead of 4".