Looking for Mercruiser Thermostat Housing

[spareparts]

I think that will work, hard to tell from your previous pics, but did the original housing have the same # of hose fittings? If it did, I think it will interchange. you have the big hose inlet from the raw water pump, big hose inlet from the circulation pump, 2 small outlets that go to the bottom of the manifolds, 2 small outlets with the restriction balls that go to the riser. Looks like you have a match. The only thing that might be an ise, it appears the hoses to the bottom of the manifolds on your original style housing are 3/4 with the new one has hoses that are 1". You night have to swap hoses to the manifolds