im back with with some results. but first thing first. i did have some clearance issues on the HD 292 ex. manifold and the intake. i did have to do some grinding on both. from the top of the ex.manifold on the left side, and the bottom of the intake on the left side. and i had to use 2 of them gaskets between the intake and exshaust. and then it finally fit flushed between them both. i used 2 gaskets just to keep me from grinding any further. but it did work just fine. if i knew i had to go thru all of this, i would have just saved my money and got them stovebolt headers instead. but here is the results,,,,. this is with 2 1/2 pipes and flowmaster 40 series all the way out back behind the driver side wheel. it sounds awesome!!!!!!!! runs great! power all the way across the board. simply love it. it pretty much helped from low to high on the power band. i can really feel it pull much much stronger. any questions or comments? just ask. ill do my best to explain. ty.