Choices..

Heck for that kinda money I would look around and try to find a good low mileage 318/360 from a 94-01 truck or van. You can get pretty good results from the magnum motors with simple bolt ons. You would need to get an intake and carb but thats pretty much it I believe. Try some of the you-pull it places. They are usually the cheapest. Check craigslist too.