Need to sell used 305 V8 in Dallas - yesterday!

[68GMCCustom]

...or as soon as possible.

I need to get rid of the 305 that I pulled out of my truck recently...especially since it's still sitting in the back of my truck!
Where can a person take a used sbc and sell it for the core value? Will junkyards give you anything for one, or just "take it off your hands"?

Or does anyone in Dallas want a '80-'85 305 V8 longblock with balancer, water pump, exhaust manifolds, and factory aluminum 4bbl intake? It was running fine when pulled but puffed on startup and had just started a slight knock in the last 20mi or so. I think core value is something like $140 w/o the extras. IIRC it has the 203 block and 441 heads. I'd even deliver it (you have to have a way to remove it from the truck) in the allen/mckinney/frisco area for just $10, or $150 delivered!