try he old fella http://frost.bbboy.net/vwengineconversions lots of info have been on there quite a few years some good stuff some crap but it is a good start.
one thing I will say is copper pipes under the pan help with the cooling and I was going to look at the water less coolant that boils at 180C freeszes at -50C odd and does not cause pressure in the cooling system so you can take the cap off when hot and nothing happens. about £90 including the reusable flushing agent that you may not need.

as i spoke other day reverse inlet new age intercooler ,change injectors, td5 turbo,re map by jolly green monster or frank en stew,330bhp all day,well up to when gearbox explodes lol,
we can go small on rads two staggerd and fan assited,and oil cooler,may have to duct air to intercooler.plenty of room with the side pods for pipe runs, ye har dude