Just an update for others doing this, the oil sender adapter from speedway worked perfectly. The water temp sender adapter, not so much. looks like it is supposed to be 12mm x 3/8 npt not 1/8 npt. So in summary, use the speedway brass 16mm x 1/8npt and the S&P 12mm x 3/8 npt. I will be ordering one on monday. /End thread jack