Originally Posted by
grip grip
Next thing you guys are going to tell him is to build it out of silver, even it cost 5 grand.

Obviously he owns what he owns (MIG), and I don't see people lining up to build these at an affordable price.
I read that some guys are using silver solder on the rails and they hold 100psi. Here's mention of it:
Welding a -6AN fitting to a Steel fuel rail??? - Honda-Tech I would think that brazing/soldering would be cost effective if you decide to go a different route.
Whatever you do, don't let it look like this:
VWVortex.com - DIY fuel rail for 16V EFI conversions.

by your theory may as well just use a garden hose to run the fuel. my .02 was tig was what the pros use and who wants fuel to leak at the injector? i know matt has a mig and from looking at the welds he has miles to go before i would trust the welds to hold. again this is just my .02 and i think matt is an awesome wrench