GTS

hi, I have a 383,4speed GTS and its all numbers matching with all the paper work with the car,
there was only 991 built with 383 and a 4 speed mine is appraised in the 35k to 38k bracket I would not sell it for 42k, so IMO if its totally restored and everything is correct on it
its worth the 42k
but that's my opinion
mine have the block stamped but it like one of the last 68GTS made that year
hopefully you can make a deal with him on the price, good luck