[Speedbumpauto]

The clip is already set up for a small block. Many places make motor mount conversions to put the LS where the small block went. I'd start there. You'll probably have to change the oil pan but maybe not. Scour the U pull it places, Craigs list, etc for some kind of deal on a block or core short block. I'd even throw it out to car people you know and machine shops, etc. that you would be willing to rent an LS engine for a few weeks to get where you're going. You might be surprised how many people are willing to help when they know what you're trying to do.