I used the Gladman manifold. A fellow from www.ka-t.org makes them. Its a cast log unit, pretty decently made and I bought mine from ebay for about $250. The turbo hangs down and the only fit problem I had to deal with was to turn the engine mount around 180 degrees. Otherwise the Z31 turbo would not fit. He was surprised so my guess is it wont fit large turbos. I also have a couple of RB20 turbos and plan to try one after I test the car as it sits.
If you visit thei KA-T site they have a few other options now.
Im traveling on business right now and will take a few pics for you this weekend.