No thread. I just did a lot of reading on here and a few other places, and ended up winning an eBay auction for the 1200 single carb manifold and 34 PICT 3 carb for about 1/4 of what they sell for normally, then bought the 1200 intake elbows and put it all together. I did have to trim a tiny bit off the ends of the manifold, since the 1200 is slightly wider than the 1100, but other than that, it was pretty much bolt on, tune and go.