MK3 turbo intercooler suggestions

I’m in need of some advise on intercoolers.
It looks like most people mount these In front of the radiator. I can’t see any chance for a top mounted one, apart from water/air is there any other option working on a budget so I think a water solution might be too much?

I am aiming at roughly 300bhp and 15psi at this point.

Can anyone suggest a recommended brand or specific intercooler that will fit the MK3/nc

I am considering doing the pipe work myself but if there is a decent kit too a link to that would be welcome too.