Of course, before I installed the intake manifold I had to install the RMW coolant crossover pipe. ?When I took the old one off one of the bolts twisted off and I had to use an easy-out and a tap to clean it up. ?However, when I went to install the crossover manifold the bolt stripped out at 7 ft lbs. ?So I had to get a helicoil kit and drill, tap, and install. ?I got it done and I can only hope it holds.