[NorCalAnthony]

Originally Posted by aggie91

NorCalAnthony - They make a specific adapter fitting for the GM fuel lines on the rail. Between the tank and the rails I will be using braided line.

Here is the part numbers for the fuel rail adapter fittings:
Supply Line: http://www.summitracing.com/parts/rus-644120/overview/
Return Line: http://www.summitracing.com/parts/rus-644110/overview/

I used the black ones. 644123 (Supply) & 644113 (Return)

Ok cool those are the same ones I've seen a few other people use. Out of curiosity, why didn't you use those on the sending unit instead of the compression style? I think the compression style looks like a more solid connection but wasn't sure if there was anything more to it than that...