1969 Race Dart w/ 426 Hemi- garaged for 45+ years

I think the car started out with a 66 street hemi, with a few bits of REAL race parts, probably second hand. The crossram and carburetors are legit 64 superstock parts, the pistons, rods, magneto, oiling system stuff are all legit period race parts. My opinion is the car began to morph from a 68 superstocker vibe to a bit more like the early "pro stock" vibe of the early 70s. Hence the tunnel ram and twin dominators, ladder bars ect. Like most old race cars, they quickly evolved and changed, sometimes even from week to week while being raced. This car shows evidence, and we have old photos, showing it in a few different variations over it's very brief career.
The crossrams in 68 used on the Hemi dart were old stock from 1964. My magnesium crossram is legit for a 68 Dart but dated 64, by 68 the remaining inventory was available mostly aluminum, the magnesium crossrams were produced in lower numbers. I am thinking A/MP, but Pro Stock for a year or two is possible, we both could be right. For it to run Pro in 1972 I think the body would have needed updating I believe the rule was within two years of production for Pro. Following your work closely very intrested in the build.