Got a 460 in my truck that I'm building up. Depending on whos looking to buy, with only 10,000 miles on a presmog desirable 1971, you might do very well indeed!. If you were here in CA. I'd give you 1000 bucks no questions asked, because to rebuild the heads and replace the pistons, bearing, balance and blue printing I'm looking at 3000, for the long block alone. The good thing about those engines is they tend to go the distance and are capable of some serious hp, the bad thing is it cost a fortune to build one up just look on line for any crate engine of that year. Good luck to you, I'd keep the engine and drop it in a hot rod!