Block stamp is 3970014 (site says from a 70 - 73) 350 Camaro. However the date stamp is a A 15 78 So that cant be right. I cant find a block number in 78 to match. Any help. See pics. 2 bolt or 4? My heads are from a 73 Camaro. I did some looking on our site and in 78 the 350 was mated to a T-10. Which mine is.