I've just bought a new pipe bender
It has a 48.3 OD former. Should be up and running next week, i know its quite a way away, but might be able to do something for you?
im in Bedford and recently brought a pipe bender...i could bend it for you but getting it with out kinks is not easy....or you could go to john wolf racing on elms farm est.....they supply for the American cars...but they also got pipe bending machines.....you could ask them to bend it,but i suspect they might want you to buy the pipe from their has well