TTI was great to deal with and couldn't be happier with my purchase. My engine is a run of the mill 340 with x heads. Milodon Road Race oil pan, Chrysler Denso starter, man steering, 11/32 tie rods,biscuit mounts, poly trans mount. Chassis is bone stock, minus the bolt in suspenion parts. The 3" pipes have a lot more clearance than I expected. Had to cut about 5" off the reducers, and 3" off the tail pipes for the tips. Also looks like I can get away with a 3.5" alum driveshaft if i wanted to. Hope this helps, as I was searching FABO a lot before buying and a lot of the threads AutoX and others have done are now getting old, nice to see nothing has changed fitment wise.