Open to suggestions for mounting an oil temp sending unit, a mechanical style. Stewart warner instructions vague, other than being in oil flow. I've heard of oil filter base adapters and drain plug adapters. I don't know if there is enough flow behind the block-off plate for mechanical fuel pump [presently using an electric pump], but I made an aluminum plate that would be easy to tap [unit has a 1/2-14NPT fitting]. My oil pressure is pulled from the 1/4-18NPT hole above the oil filter.
Dick
Dick