Huffer
I know that you can over bore the motor and then sleeve it back down to smaller than stock and bore it back to stock. I've done this to real old motors that you can not replace now days. But it has to be done right the first time.

Huffer thinking here.
Before you jump here you have a 50/50 chance that the motor may not be that bad if you can get one head off and see if there is any deep cuts in the cylinders if not, you can cut the ridge off the top of the cylinders and hone it out. Put over size piston rings on and your back on the road. I've done this and it works with know problems. You only want to cut what you have to no more. I've been out in the junkyard today and pulled me 2 sohc motors they run just the timing chain problems. One is a R/O the other was T-boned. But I can not complain 2 motors for 100.00 Plus core. Rebiuld time LOL, I love this part.