This should help. Was a 73 340 Challenger that I had at one time. The exhaust manifolds were from a T/A, everything else is reasonably correct. The car was in a Challenger/Cuda book (Genat's) and a magazine.

After rebuild 008.jpg
'69 Hemi Charger 500, ‘70 U code Challenger R/T
(These and a bunch others at www.dkowal426.com)

P.J. O'Rouke: "The old car ran perfectly, right up until it didn't."