I knew that question was coming.Many ways.This is a barnfind old race car.The owner knows nothing about Camaros.Here is the scoop 427 written on the fender extensions with 47 years of dirt on top of the 427.No emblems for engine size,single 3/8 fuelline,factory cowl hood with all firewall cowl parts ontouched,big block frame mounts ,bb heater box never removed,bb fan shroud mount,pictures from pre 1975 racing,dual exhaust plate on rear frame,x11/d80 no its not a SS350.Fenders or any sheet metal never removed.The body build number is one after Taboos black copo he purchased new at Brigance .This car was sold at Brigance also.Remember copos are built in batches.Also contacted the second owner 1970-75 he said it come with a 427 and a m21.He purchased it from the original owner with 5k miles on it.Now there are 12k miles.I am going to post some pics soon. I am 100 percent sure it as real as they come. Excellent restoration project.How many black x11 copos are there sold from a known hi po dealer.