i've been noticing a lot of bad things about the thorleys lately. i've got one, and it leaked around one of the air injection holes above the #2 cylinder when i bought it. the weld bead on the inside of the flange is off centered just enough to create an air gap.

i fixed it by sticking my welder in the air injector hole and zapping it shut(the nozzles are steel). no problems since, but it was still a waste of my time.

thorley's design and it's fitment is very good, but the overall quality is a little on the sketchy side.

'79 sport 4x4 longbed <img src="/forums/images/graemlins/smile.gif" alt="" />
20/22R hybrid with EB's OS valves, 268c cam, offy intake, weber 32/36, thorley header, 5 speed swap, 34" LTBs, downey 3" springs, marlin hysteer, 4.88s and locked

'91 4x4 shortbed
22R-E, W56, the dd!