So you're swapping the H6 into your long-travel outback, instead of upgrading the suspension of the H6 car?
The short term plan is to replace the Impreza trans so I have something else reliable to drive. Just ordered one, 158k miles, $300 shipped. 96 Legacy and Impreza were both 3.90 final drive, right?
Then get an H6 donor car (01-04 OB EZ30) and start paring down the wiring. Install that in the 99 Outback.
Bunch of other things we want to do to the 99 Outback. The only other major thing is a six speed trans and possibly R180. Depending on how that drives, perhaps some kind of gear reduction. Also electric jacks, rear view camera, tire pressure monitoring system, quick release tire and recovery ramp mounting.
We are also planning on making a few sets of the long travel struts for our cars. Need to get started on that soon, at least getting the custom springs and some of the machined parts on order. I'm trying to find out more about the Hot Bits long travel struts first, if those are cheaper and strong enough, might just get those.
Next project is doing bumpers, skidplates, and long travel on a 01-04 H6 Outback for trail riding/expedition, not racing. Might be the one I just bought, I will probably try to find a nicer one for the wife. At that point I might sell the Impreza.