selling pair of heads, need advice, input...
 

I have two sets of heads from 350 GMs, want to sell one set. One is off a GM crate motor and the other from a TargetMaster (mexico). Ending casting numbers are 441 and 993. It will cost me $25 per head to have steamed and magnafluxed, so I will have $50 in expense to recoup + time and effort + base value of the heads as is.

Think I have to have them inspected to sell them, have been told both are good casting numbers and sought after by circle track people (who have to run stock heads) because these casting numbers are supposed to have better flow.

Question is, which set would be most sellable at the higher price and what could/should I ask for them cleaned and magnafluxed.....OR...should I go ahead and put a three angle valve job, stainless valves and such and try to sell them ready to "bolt on"?

Lastly, is it even worth mess'n with?

appreciate any comments.