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I would buy a crate motor from someone like Indy Cylinder Head or Muscle Motors, probably not MP. I think they are more concerned with their reputations


FWIW I had muscle motors build me a shortblock several years ago.It ran great and made good power.I had a problem with it and Eric was great to deal with and PROMPTLY took care of it to my satisfaction.
Another good shop is Hensley Racing.I purchased a set of ported iron heads for above longblock.Ran great and made much power but engine smoked constantly.Replaced intake gaskets twice to no avail.Ken said send back and I'll do you another pair no questions asked.He did and smoking went away.You can't find service like that just anywhere.
Hughes Engines has always been good to me as well.