tlane, the info here appears correct. the skidim part is what I use in my 93 prostar non LT1. buy two so you have one as a spare and/or for next one and I think they come with the white gasket. If not, be sure to order gasket for cover. also, it may be good to check your thermostat area for shreds of rubber from the impeller. for that matter, I recommend you change your thermostat and gasket at the same time, if it has not been replaced in a couple years. fairly cheap insurance to keep it running without incident.
1993 Blue Stars and Stripes Prostar Powerslot 351HO
Mastercraft: Face It - If you are not a good skier behind this boat, you are not a good skier.