the promaxx are also out of stock, no idea when they will have castings.
if i was building a 383, i'd do the 75cc chamber E-Street head.
440 or stroker, promaxx
wanted a stock look, the 440 source heads.
i think the promaxx heads would have the nicest valve job.
I was liking the E-streets till I saw - Wow! They say QA is bad on china heads, my small block Speedmasters were much better than the E-streets they disassembled
