Nope. And I'm not going to either. At some point I have to draw the line. I am sure the head and block could be magnafluxed, and the block could even be re-sleeved. But at the end of the day, I still have a 235 cubic inch engine making a bit over 100 hp, for the same amount of work and money it would take to rebuild a larger engine.
I found a website that sells rebuilt 292's for about $1200 bucks. GMPP sells brand new 4-bolt 350 engines starting at $1700 bucks. Either engine would make loads more power than a 235 for about the same money it would cost to rebuilt it.
I have no problem parking the truck for a couple of months while I build up the cash I need.