Ann Arbor Sportscar is pleased to offer. A reconditioned used OEM bare builder engine cylinder head assembly for the stock Triumph 6-cyl. In-line 2498cc engine with the narrow-port induction head found on the Triumph TR250 and early TR6. This cylinder head can also be retrofitted to a later TR6 provided that you also have the proper earlier narrow-port intake manifold for this narrow-port induction head configuration. The distance between these intake ports is approximately 0.65. The Stanpart casting number is 307837. The part number stamped on this cylinder head is 516323. We measured a head thickness of 3.45 with our shop caliper. This OEM cylinder head was recently serviced. By…