I have a couple parts off a dragster that I recently bought that I have no clue what the value is on them and what I could sell them for. I have a Holley volumax electric fuel pump, front bbf motor plate and a powerglide to bbf mid-plate. These all came out of a 96 Danny Nelson racecraft chassis. I greatly appreciate any help!

I generally take 50% of the retail price of the part and start there. Probably won't get that, but it is a starting point.
Your market for the plates is pretty small. So it is going to have to be the right guy to get anything out of them.

I agree with Bucky.