Tarantula is a later Stapely Hawk, ski race boat. That was her race name way back when. Wooden hot moulded hull. I have an earlier version of the same boat with an '84 115 Merc stack on her, also an ex ski racer (ex. Dennis Holmes & Jim Cox).
Mimi's (1960 Healey Sprite, newly restored) white Merc is in fact an 80 - never made in white. The owner built it up from bits, painted it white & put '35hp' on to to fool his wife into coming out with him, it's technically her boat as it was paid for with an inheritance from Aunt Mimi!
More pics HERE