Suppose to be is correct..but their NOT!!..friend of mine put them on his '70 dart,had a problem with the 2 center tubes on the driverside hitting the streering column,he had to add a few shims to get them to clear,he also has a problem with one of the tubes just about touching the oil pan,not happy about that..these 2 issues are something i NEVER had running tti's on 2 seperate '70 duster..for my money its tti's or a set of custom made:thumrigh::thumrigh: