Hi everyone i am fitting a 2.5 n/a into my 1970 2a,just wondering what radiator to use(hopefully the original one but ive noticed on a defender that they have a plastic cowling going upto the rad? Do i need one or will the standard 2a rad be ok as it was? One thing i need to point out is that the front will be a defender front grill/bonnet not the 2a so just wondering how it would work,any help would be great,thanks.