Triple Mikunis

Ok, two questions, finally I put a center force clutch in the '74 and now that I can actually drive the damn thing I have a question regarding the triple Mikuni set up that I have....

And curse the 500 mile break in on the clutch, that is gonna take forever...:tapemouth

Anyway, I need to know how to tell the mm size on the carbs and what I need to do regarding a fuel pump to supply the beasts...

Currently I have put in a stock 240 electric fuel pump I had laying around, but I don't think that's gonna do it...

Any advice?

Thanks!

~Brian