I have no experience with repairs, but have met both Joe Bell and Kevin Prus.
Both are straight up knowledgeable folks and I would be confident in either.
Interesting fact...
I have THE Jensen head on my 24 touring, that Kevin used to make the mold for his "Prus Head" !!
He was here to pick up parts to take to Chickasha for a buyer in TX for me.
I showed him my car, he was looking at the head and when I told him I had gotten it from Art Bilek's family, he immediately said, "that's the head I used to make my heads !"
Small world !!