Sounds like you've done the research already. I am just now looking into it. Looks like it might be doable and a big upgrade from the F engine that's in it, right? Whats holding you back, Sasha?
I had a 327sbc in my last 40 and loved it, thats why Im on the fence with the 3fe. The sbc conversion is not a cheap item either.
I also have the pto winch on it and would like to keep it. That added front driveshaft can be a clearance issue on a sbc, I think. I had to have the header cut and turned to clear it.
Btw, I will now have some parts and a block off the f engine that's in it for sale! Jim C carb and all.