To go back to that head, I just picked up another 170 from a '61 Lancer, head casting# 2202952-3. It had a Victor Victocor gasket & the O/A height is 3.595", the '62 Valiant head casting# 2206036-1 w/the factory OEM shim gasket had an O/A height of 3.610".
The depth of the 'dime' on the Lancer...