[quote=340KID]thanks - were the GM Merlin blocks a nice piece ? [/quote?I have 2 unused Merlin ProSeries CGI blocks that were left over from that program weither they are exactly the same as what they raced in not sure?The 2 I have are 9.8 deck 55mm cam splayed caps reverse cooling,they were special order with a lot of extra material everywhere just blank lifter area and no head bolt holes.Im gonna say the one or some that Nickens raced were on one of the olds drce cast by "CAT" the yellow tractor people.But after they won or did well rule change and no more.If you want to go fast with a mopar head these blocks are the go.