Hey , it is the canam block 427 ......guy wants $10,500 .....I thought with its rarity and what the ZL1's are bringin ...it might be cheap compared to a 25-30 thousand ZL1 . Guy on the yenko site says it's the prototype canam block and another guy on the phone , but they won't throw a figure on it . The guy that has it said there is a picture with Grumpy Jenkins having one in his car , but another guy said that they had to run the ZL1 block in drag racing because it was a production block in a car off the line . Thanks , Richard