I think having your existing head repaired is a good idea. When they found a crack in my 216 head I went thru four used heads before I found a good one that would pass magnaflux. Total investment was close to $500 before they ever did any machine work on one. I'm sure ACH could repair a head for less than that. If you do it right, you'll have close to $500 more in new guides, seats and valves by the time you get the head back on.
Of course you might get lucky on the first try.
Denny Graham
Sandwich, IL
