this is a different engine that what is going into the camaro. My son and I went up to my dad junk lot last weekend and pulled out 6 different bbc. engines. The one I am calling a 6.0 is block and head casting numbers --- 10114183 ----10101140? Did they not make a 6.0 in 1991. It also has 6.0 cast in the outside side of the block.?