Good afternoon, in terms of the radiator, bite the bullet and get hold of Simon at Sifab, for one of his works of art. Great piece of kit Aluminium rad is the way to go, it comes with everything you need and is simple to fit. I did mine on my driveway in Dubai took around 3 hours start to finish. Engine runs 8 degrees cooler even in the heat of the Dubsi summer months.
Good advice...