Mike since you're more familiar with pricing of std bore 421 block here in the SE, I would like your input on a trade I'm getting ready to do. I recently had a source another 455 block. The block I'm trading the 421 for is a std bore 2 bolt complete 455 short block . The 421 I have is 4.bolt, and the crank may.not be original to the 421 block. Do you consider this a fair even trade? Thanks for any insight