HTS Silcone Hose Size for a Vortech V2SQ on a 2000 Mustang GT>>>

why not just measure the old ones? off the top of my head, i think they are 3".

Get the 4-ply and just measure ..... Get their T-Bolt clamps too, they are better than any I have seen.

You probably need 3 to 3 inch cuplers. But measure because those HTS cuplers are VERY size specific, especially the T-Bolt clamps. They have insane increments and if you buy a 3 1/4 inch clamp instead of a 3 inch, it won't work. Hope that makes sense and helps. Measure the pipe from edge to edge ...