I had the 2 inch coated and polished from tti, for my 44o , had everything mounted and installed on the k member, lowered the body down and had everything in place, left torsion bar fit perfectly no mods to kickdown or steering interference as advertised. slid the right side in and hit on the collector and missed the hole in the lower control arm by3/4 of an inch. Called tech assistance and they wanted to blame it on mis aligned body or incorrect motor swap.... sent then proof of alignment and all their measurments of crank bolt height from k member and side to side clearence , matched their dimensions perfectly.... pulled motor/trans/ suspension assym back out and boxed them up and sent them back. they claim that those pipes had no problems but suggested I go with the 1 7/8 set as it is routed differently or they would send the 2inch back and I could pound a dent in the collector to make them fit. Didnt seem right for high dollar mopar specialist brand not to mention it would jepordize the coating. The 1 7/8 fit great but i have not started the motor yet so my opinion is only of fit and customer service. I asked for the inconvience if they would send along an h pipe to make up for the delay and time wasted, they claim they were losing too much because they would have to have the old 2 inch pipes re coated and polished because of all the shipping and install they got a little mark in them... boo hoo,,
even with all that i have too say they look mean just sitting still