Im not trying to be a know it all either, I love this post and actually have it saved to my computer, but being able to weld well isn't strictly a necessity so far. I did the 2 bbl Conversion using brazing... purchased a WG flange that would bolt right to my turbo... had a BOV flange built right into my intercooler. BAsically it's looking like Il only need to do about three welds. Two being simple, weld a flange to a pipe, and one being, weld some pipe to pipe. My dizzy arm mod, I used some Epoxy and filed, looks fine and should work fine.
Just in case people are discouraged by the necessity to weld, it's basically all simple if you make it, If i was dead set against buying a welder I could have paid a shop about 100$ to do the REQUIRED welds for me