matt i hope to save you some hassle but an8 male fitting with a an8 90* fitting WONT fit behind the recirc valve. rememebr i had 3 of these rails on my car from an to an6 using different styles of 90* fittings. the only way there was enough room was to cut the rail at almost the injector hole and tig weld the male fitting. add a 90* after. its a major tight fit. its easier on the pass side if you leave the bend in the rail .

weld away but i dont know of a single fabricator that uses mig on a fuel system. the only way to properly control the heat is to use a tig

something to consider is how my new fuel system will be routed. out of the tank with an8 splitting into 2 lines to the filters then a y to a single an8 to the rails and using 2 rails split again and feed each rail individually. back thru a y into the fpr and a an6 return line to the tank