pallnet im running the stock 82 zxt intake and exhaust manifolds and they get enough engagement to hold it tight it just doesnt get fully though the locking part of the lock nut. does that make sense? and i thought it might of just been my set but we installed a set on SPEEDERS and it was the same. its working but i would rather have more of the threads passing through the bolt. not saying your kit is bad in any way shape or form though as its working fine i just would of liked it to be like 2-3 mm longer