jaimecidpedro,
The guy that had the dual Weber DGV's had the manifold custom made. I have not ever seen a manifold like that made by any company so I wouldn't bet on going for the conversion. If I were you I would save up for a dual Weber DCOE or Dellorto DHLA setup. I just put these on my car today and they are WAY better than the SU's and Weber DGV. For the sway bar on the rear, you have to connect it to the rear end using clamps that are just like exhaust clamps, it connects there using the sway bar bushings and then line it up with the end links and frame and drill the hole in the frame wherever it evens the sway bar out and connect it using whatever brackets came in the kit. I'd show you a picture if I had one of my car's rear sway bar, but I don't have a digital camera. Let me know if you have any other questions
afracer78@aol.com-Andy