So I went to look at a 400/451 stroker,440 crank and rod version that a friend of mine had aquired,shortblk that valve had dropped in number 4 cylinder,got there and sure enough it not only dropped but broke off in the head turned the piston sideways in the blk along with busting out half the cyl wall with it...so I passed on it and 2wks later I find another one 150 miles away and its fairly complete but had a spun rod bearing on #3 rod but said shut down imediately but wouldnt turn over[was supposed to be free turning] and after talking to both guys it was a coincidence that both motors came out of dakota street/strip trks not that that has to do with anything but was strange..so my question is...are there some odd quirk to these combos or is it just some happy tweakster over revving or an oiling problem or something else...1st guy wanted 250 for shtblk and second guy wanted 975 for complete motor,alum int,906 heads etc...which I am only interested in the shortblks hopefully between the 2 will have 1 good blk and 15 pistons,2 cranks,15 rods..providing they all checked out good and we can come to terms on price...any suggestions as to what to offer or not on each or is it even worth jacking with? Thought about 100 for the 1st set up and maybe250 on 2nd setup...too much/too little? Thanks in advance