Running pipe. Need help.

Hello. Do any of you have ideas on the measurements or degree of angle to run pipe (2 1/2") from the headers back to just before the axle on a 74 Duster. Motors a 340? It looks like I'm going g to need a bend or 2 the get around the cross member. And the existing pipes have a short angle right before the mufflers. Is that needed? I bought pipe and am going to have a shop.bend to my specs. Any tips or tricks? Thank You! I'm needing to drive this bad. Long story ..