Mac, still looking for a 2136477?
I just picked up a 1951 228 and would be willing to part with the head.
Let me know if you're interested and I can have it disassembled, hot tanked, and magnafluxed -
And for shipping, I recently sent an 848 head to Chris via Fastenal for what was it, like $150?
GMC probably weighs a little more, but shouldn't be a huge difference.

BTW Chris, you got that 261 running yet?

Cheers guys,
Mark