While on your back? This has pretty much ruined the rest of my day.
I tried reversing the way the downpipe bolts go. That worked just fine with 63 a/r and 2.5in swing valve.
With the 3in swingvalve, there doesn't seem to be enough space to line up the nut with the bolt hole. Even if I got the bolt/nut started, I don't see the downpipe bolt getting tight since it is already making contacted with the exhaust housing when I tested the bolt through all the holes.