Some of those old classic motors are getting pretty hard to come by these days. At one time I had 6-8 Mopar motors sitting around here. Today there is only one left, and if its even rebuildable is pretty questionable. The only reason it is still here is because it it had to get to. You can't go to a junk yard and buy an old motor these days either. The current "old" motors are in most pick a part yards are around 10 years old.