Were you able to see if the Merlins were a match set? Or what numbers the heads are?
The look to be a set, one has some damage in the quench area of one chamber, rest of the chamber is good. I don't know much about Merlin heads, looks to be a 92 date on these, 3/8" valve guides. Someone told me there should be an "a, b or c" letter designation for the runner size, don't see that on these.
I need one 188 head if you are willing to ship it. Maybe via fastenal. It would still be worth it to me via ups ground. zip code 29072
Once again, you can check shipping from my zip, 91740.
I really don't want to ship, prefer that someone inspect these in person and/or take them to a local shop to have them inspected with return privileges if there are any cracks or defects that make them not usable.