I picked up a 73 360 4 bbl engine for 100.00 with less than 15K since the rebuild. You may get someone as already stated that is in a real hurry that'll give you much more. With yours only having about 3K since the build and many people not wanting to go search one out, it may go much higher. There's a little town south of here with a wrecking yard that will sell me a running 71 440 still in the New Yorker for 500.00. They're out there but just gotta find em. I say give it a high start, you can always come down. Good Luck!