unknown blower set up for la small block.

Dyers will rebuild the 6V71. A friend had one done a couple of years ago. I spoke with them a year ago and they still have limited support for them. They do move less air but as Dyers explained it 6psi is 6psi and for a street car it's not bad. Since you don't know the condition, it's not polished and it's an outdated 6V71 I would think $2500. You may have to have work done to it. You definitely will want someone like Dyers to inspect it. Good luck