Looking for silicone heater/radiator hoses

[Jvan]

One of the short heater hoses from the firewall to the back of the engine decided to split and piss water in my driveway (fortunately not while on the street). While I'm at it, I'll replace all the water hoses and would like to use the silicone hose but can't find any listed for our engine just 2.0/2.5l 4 cylinders. Anyone have a source or site that I can check? Would hoses from a Tribecca fit if I could find some for that 6 cylinder?

[Jvan]

Need to add some new info. Checked at Subaru Parts and found 3 rather long hoses that look as if I need to get to the heater box to release the core clamps. I thought that I could release the clamps at the firewall inside the engine compartment. Surprise to me . Not the easy access I thought. Also why are 3 hoses listed since it looks like there are only two hoses? I found some silicone heater hoses sold by the foot on ebay that I thought I could use but I don't know the inside diameter of the heater hose. Can anyone provide the inside diameter of the heater hose?