Planning on swapping out the 250 straight 6 in my 69 for a 302 out of a 69 Fairlane. There is an old engine builder down the road so I took it to him for teardown and evaluation. I don't have the expertise to feel good about tackling that myself. In any case, I just asked him to evaluate it, let me know what he finds good and bad and provide an estimate. He said he would and could do whatever machine work required and give all the parts back to me for reassembly or he could put it together for a price of course. I asked him what that would be. He said he will only put them back together if he bores the cylinders, turns the crank, installs new rods and pistons of course, complete valve job etc "to basically turn it into a crate motor". I asked him what a ballpark is on that. He said, "worst case, $3,000-$3,500." GULP. I think I'm gonna end up putting my air cooled VW and small engine rebuilding experience to use. I've helped with a 350 SBC before but never cracked open a Ford. $3,500 is a bit much for me. I can do a few hundred here or there without the wife noticing too much or at least not saying anything and a grand or two with prior discussion and convincing but much more than that and I'm in trouble. Never thought it would be that high when I see long blocks online for much, much less. Oh, and this guy has the reputation of being affordable.