I would not recommmend the phantom grip....besides, I paid less than that for a new OEM ITR LSD (helical gear) off Honda-tech. A KAAZ or Quaife is going to be a far better product then the phantom grip also but gonna be alot more than a helical...OPM Autosports in Cumming sells a clutch type LSD for a decent price.

Did this swap come with a B16 tranny? I think it's gear ratio is pretty close to a USDM ITR so I'd just find a OEM LSD. Alot of race teams will buy a brand new ITR transmission and swap out the LSD for a clutch type...I actually think i know where one is sitting now that i think about it

As for the ITB's you'll probably want an upgraded engine management setup since you would have to tune it for changes in the weather...ITB's can be a pain in the ass if you don't have the proper setup. As for filtering, each throttle body should have a velocity stack (trumpet looking thing) and a filter...both normally available from just about any motorcycle shop. Buying a pre-made kit is going to cost a shitload, i'm talking $1,500 used and $2,500+ new...then you have the problem with needing constant tuning to run its fullest. Check on Honda-tech.com and other honda forums for better deals on homemade kits or the parts to make one. ITB's are the next major thing on my list, after fixing my gear ratio's anyways