Look up Intrigue98's thread about it. YOu'll see the pipe on the jig. Meanwhile....
You are welcome.
Catback flange end: between blocks 3 3/4"
Left height 3/4", length 12 3/8", right height 5"
Space between blocks 6 1/2", left height 7", length 7", right height 2 1/2"
Length between blocks 13" Manifold end
Easy