It must be doable because the T4 Transporter (Caravelle) was fitted with a VR6 as a factory option. I knew a guy that bought one, I think you can sit and watch the fuel gauge needle go down! Good luck, Gizz.
well ive never done that one but im Pretty sure it will go in...ive always thought of the VR6 to be more of a strait 6 than a V engine..when there out and its a bare block/head youll see what i mean....anyway if you get no luck here search online for any VW forums....the should beable to advise.