[mavers]

i too have done this mod, I run a GU turbo on my 4.2 safari with a TD42 GU box and lid. It all bolted straight in, the only thing i needed to mod was my factory 2nd batter tray, just chopped a bit away so the battery tray away.

I used a bit of silicone hose and 2 hose clamps to connect the airbox to my safari snorkel. Bit of a tight fit but all fits in there snug now.