PD,
Buttmoores blocks "look" good but have not been tried and trued!
http://www.network54.com/Forum/119419/message/119794227...+NASCAR+Block+Photos
Something from the past to consider for Vintage Racing might be the 351C NASCAR blocks if you can find one, I myself am using a 4 boltmain std bore block set up for ORR, I like to keep it simple and use the factory proven parts.
Good luck, Mark
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