Anything that fits a W block, if not now, is going to be worth good geld as time goes on. Point is, hoard them for 10 years and sell them then to help fund your next project, or offer them up to needy member's here.
These projects cost money, it is good to get some back so you can spend making yours that little bit better. This reminds me of the corvette swap meet that my buddy and I go to, we used to attend and buy a booth to sell all our left over stuff. I was pretty heavy into it 25 years ago, he still is, anyways we got a booth and of course other vendors get in early to set up like we were, this guy came into the booth and told us he was restoring a driver quality 60 corvette and my buddy sold everything he had for a song and a dance before the event opened. Later that day, we saw all his stuff in this guys booth at 4 times the price.

1953 Chevrolet 3100
261 cu inch, sm420, 3.55 rear, torque tube still,omaha orange, still 6 volt, RPO green glass, side carrier spare, all done
In the DITY Gallery
Video of the 261 running

1964 GMC 1000
305 Big Block V6, sm420, the next cab off restoration