Not sure what it's like over your way but, up here you can get a 302 for cheap money and every once in awhile you can find a stroked 331/347 for next to nothing and that should be a bolt in.

Otherwise I'd be searching for a 429/460 or if a FE pops up for a fair price... Lots of choices and we'll gladly help spend your dollars! Let us know what you decide.