I'm probably the least experienced one here with "W" engines and assorted parts. I do know they cost alot to purchase and have rebuilt properly; especially the 409. My '61 348/434 with bunch of Edelbrock parts, special pistons, machine work, was probably close to $8,500.00 when done. And that's with a 454 crank and 396 BB rods, both the machine shop already had. My '63 409/340 was a little different. If memory serves me, I think I paid about $2500.00 for the short block and a few hundred more for 817 heads. By the time I bought additional parts and with the machine shop work, I probably have about $7500.00 in this motor. Not really sure. I do know that I care not to ever replace this motor, so I'm careful with it. From time to time, I look at complete, rebuilt 409 motors. Personally, not trying to offend anyone, I think the prices are outrageous. Some are upwards of $16,000.00. You have to be kidding me. I know they haven't made them in years and they are getting hard to find, but seriously, do they really command that kind of money? I may not look for a few months on line, but when I do, the same ones are being offered. Haven't sold yet. No surprises there. I'm always on the lookout for another 409 engine. Something fairly complete. Needing rebuild. I don't think a truck engine would bother me. It would have to be local for my viewing or buying from someone I trust alot. The price would also have to be real right. This would certainly be a want, not a need. I would put it on an engine stand in my garage and give it the attention it needs over time, Carmine.