Need ideas for mock up material?

[yody]

Hi, i am going to be making my upper and lower radiator hoses out of 1 1/2" stainless tubing, and on each end i will connect it to the rad/engine/pump with a rubber hose coupling. I will have to take my stainless tubing to a shop that has a mandrel bender. I need some kind of hosing for mock up, something stiff but still benable so i can bring them a model so they can bend the pipe to match it, i tried the metal hose for the smog from air cleaner to e manifold but that stuf rips and tears, i need something stiff that will bend and hold its shape, any ideas?