No one really mentioned any warantee either. I would bet that there would be one from you local builder.

Another option, if you looking to save a little money, is a brand new GMPP crate engine. The 290HP/350 can be had for less than $1800. It'll bolt right in easily. You'll also have your old engine if you want to take some time and really build it up when the funds are available. I just did the very same thing recently with my '69 Camaro.