LS1 to FAST 90 and coolant lines!! help
I got the LS6 kit I think with mine, includes the 2 plugs for the rear and the front crossover to go under the TB and to the radiator.
took some bending to fit on the front b/c of the size of the mouth on the FAST 90, but no, never heard of overheating, at least not until now.
I simply cut off the back ends of my old crossover pipe, plugged them up and bolted them back down. I cut off the front portion and had to bend it a bit to make it fit, but after that it worked fine with my 90/90 setup...

