Make of list of parts and ask about each part. I know there has been problems with Indy blocks. I believe it was moving around but this motor was not ordinary 650 HP motor it had twice that HP. It also has the tops parts in it and raced NSS. One thing building these motors is not a cheap thing to do, it takes good parts. I like the Stage V Heads there are different ones to choice from and with that you have different choices in intakes. I like the Ray Barton Oil bar oiling set up also. I have seen all this stuff last and last in Nss Racing. If a build is a lot of money do it over a couple of years. Phone FHO, RBE or Saquash on Moparts and talk to them about a build and what they have had success with. All should be up on what is currently available.