I've been hunting on a few exhaust system web site for a cat back for my 2007 2.3 XLT extended cab. Are all three ( 3.0 the 4.0 and the 2.3 ) using the same OEM plumbing after the last cat or the Y pipe??? I checked the Dynomax system ( # 39315) and its on all engine models for the extended cab short bed 126 wheel base.

Thanks,