No need to buy a pipe bender, just bend it round a round object. I use my bench vice handle.
Also, to guage the shape just right, get a piece of A4 paper, put it behind the pipe (on the car) and pencil round the bend to get the best idea were you need to bend the pipe. Just do that for every bend one at a time, and all will be good.
Oh yeah, look in the Good Guys section where I posted a mention of Brakespeed Motor Factors. Machine Mart do a pipe flair tool for a fair price too.