I'd also be interested in what others have paid to have their M103 head reconditioned (valves reground if necessary, seals, and guides), but I'm considering doing the r&r myself and taking the head to a good shop. So I'd like to know both prices, for the shop doing it all and the shop only working the head. Anybody else BTDT??
I'd also replace the timing chain while I had the head off, it's too easy an opportunity and almost free with 220 k miles on the motor.