Join Date: Jul 2001
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The floor bolts are lag bolts, so there is no "nut" underneath.
Unless you buy exactly the same head, you won't get the lag bolt locations to line up, but it's not an issue. Just fill the old ones and drill new ones.
The "best" head is a Raritan, either the PHII or PHC. The challenge is to get the head out hose to line up. A wee bit of measuring will tell you if they'll work for you.
The Raraitans have the head pump inlet on the front, so you'll need a longer inlet hose usually with a 90 degree elbow.
If what you want is your ONLY criteria, your only choice is to buy another Jabsco.
Stu Jackson, Catalina 34, 1986, M25 engine, Rocna 10 (22#), Maple Bay, BC, Canada