The Fox body brought a bunch of features to steal Chubbies thunder. The off the showroom floor Camaros and Firebirds were quicker, but cost a bunch more. For a few hundred $ in aftermarket parts, the Fox was quicker and the owner still had beer money or gas money in his or her pocket. The parts commonality on the 5.0 Ford brought costs in line with the Chubby small block.
Unfortunately the dark ages of K cars really hurt the parts availability for classic Mopar fans, and since then parts from new vehicles have no relevance for the classics.
Caution Dartswinger70, mention of an alternate race can get rumblefish360's nose out of alignment.