So-is this in a boat? I don't think HEI is legal in a boat. The company I work for, the owners have a big houseboat that they keep on Lake Powell in the summer, About every 3 years they haul it up to the yard in Salt Lake for a re-fit and one year they up-graded to HEI (this was a Mercruiser Chev 350) and when they got it back to Powell the Rangers inspected it and reg flagged the HEI-wouldn't let it on the water until they changed back to points. I don't know why HEI is/was banned from boats.