the fiesta centre used to do the 5 speed fitting kit, not sure if they still do. You have to cut a big chunk out the inner wing and reinforce it, it also includes a modified tie bar and a strengthening bar.

as for a rad, with it being a turbo motor you at least want a brand new rad or better still have an alloy one made.

i ran a standard xr2 rad in my mk2 and it was ok most of the time but in heavy traffic it would get hot.

Have a look on www.xrtwo.com for parts and advice