Subaru Legacy 3.0 - LPG Conversion - any experiences?

[Mr Taxpayer]

I'm currently running an Impreza WRX wagon on LPG. I bought it at 60k, converted it straignt away and have had 40k trouble-free miles. The family's legs are getting bigger and I want something with more room and am looking at the Legacy 3.0.

Anyone got any experience converting one (i.e points to note or work to do at the same time) of these or running a LPG-converted one?

Thanks

PS. I don't need recomendations of where to have the job done; I'll use the same team that did my Impreza.