after o2's
 

How much past the o2's must an exhaust go. I have to fab up something temporary just to drive the car to my exhaust shop.

Usual figure is about 18 inches, tho if it's a short trip, you may get by with openheaders

No worries if you're just going to drive it to a shop.

Yeah it will be fine with open headers. People have driven a 100 plus miles with open headers and only had a horrible headache once they got there.

Unless your shop is about 4 hours away you should be fine.

2-2.5 hours away.

I would not worry about it at all. If you're concerned, then leave the O2's out/unplugged and run her in open loop. :D