They're 38mm carbs from a GSXR750. I wasn't sure if they were going to be big enough to run a 160hp motor. But I calculated the airflow compared to a single stock throttle body and there does seem to be about 50% more throttle area with these. But that's all I really have to go on, some trial and error.
I'm not 100% sure on what mods yet. I don't think I'm going to do anything super wild yet. Compression bump, some cams, get some bottom end lightening done... Not sure yet if I want to do headwork or not. Definitely will have to have a custom header built for it. Hope to get maybe 180bhp out of it. Hopefully the carbs can keep up. Hopefully I can figure out how to jet them, and change the needles and all that. I'm hoping that the fact that they're CV carbs will let them be forgiving. The car ran and idled with the stock jetting on the carbs, so it can't take too much. Here's a video I did before I had Mike make me his badass manifold, and before I found out the engine was fucked:
http://www.youtube.com/watch?v=pPs92KrCaj8
I hardly think your ITB project was a failure. It's probably pretty frustrating for you at this point, but there's still some interesting potential there. Did you ever get videos of how your car was running, or maybe some pics of that manifold all assembled and installed on the car with the throttle bodies?
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