Hi, Being a total numbskull when it comes to anything technical........will an aircooled engine fit a watercooled BIS gearbox? Are the mounts different/ could I use the same manifolds etc, (obviously I would remove the radiator). I'm looking to up the power of the rally car (new pics to appear soon) and it appears that the best bet is to go for the aircooled. If it's a simple engine swap I'll be on the lookout for a modded aircooled, cheers all.