yep stuff is drying up 454 mark 4 blocks are getting tuff to find in good shape 350 one pc rear main seal with hyd rollers cam s blocks are the ones i looking for to do some low buck build s have one now .going to nail down some mark 4 454 for some builds .there is a yard over here he will sell me all the new 350s that he can not sell as good runners.lots of yards around here .tell me what you want