Back in the 80's part of the allure of the Stage V was the cheap cost of a 440 block if you blew one up (although some of the extra machine work might cost a bit). Now that Kieth Black blocks are making a come back the repairability of the aluminum blocks sort of erases that advantage aside from the buy in cost up front. If I ever build another Hemi for use other than a stock/restoration I'll be building a KB for sure.