I installed one in my Malibu Sportster and added the Perko transom inlet. I also installed a brass shut off valve off the scooper inlet, so when I'm running the boat off a garden hose, the water is diverted towards the impellor.
Edit: just to clarify, in the third picture, the black y is the ebay item, the grey y is the heater return.
(Message edited by 99sportster on October 17, 2005)