People switch to a forward facing ofh to clear large down pipes. With a large dp it is next to impossible to remove the oil filter for an oil/filter change.
The water cooled filter housing can suck because if you over tighten the filter I believe that you end up crushing some piece inside and you end up mixing water/coolant into your oil.
If you have the money, get a 90 air cooled filter housing and either source a 90 1g dsm cooler with lines (which you will want to clean out really well before install. I personally wouldn't install a used one), or buy a new b&m or mocal (better) with some nice fittings and lines. You can either mount it up on the front lower frame or some people mount it in front of the driver side wheel behind the fog light after they remove their fog light. They use the fog light bumper hole for air source.
There is even the option of using a oil filter relocation piece. Like this:
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Copy and paste this into the search field and you should see many threads with pics:
+oil +filter +housing