It is hard for me to say whether your existing openings are adequate for the Hedmans. You pretty much need to take it a pipe at a time and see what they need. I separated #1 and #7 pipes from the 3 & 5 center pipes. Same on the other side. You can then fit the collector and see what it needs. The collectors are outside the front subframe rails and go underneath the torsion bar crossmember. I routed my exhaust inside the subframe connectors where I "hid" the muffler. Then out in front of rear tire. You can see some of that in this picture. Of course it can be done differently.
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