John its got a Andrews Cam (EV27 i think) S&S carb, the jets were 42mm but my buddy said he replaced them with smaller because he kept fouling the plugs.
i found this bike while working in Arkansas a few years ago but did not have the $$. i showed it to a buddy and he bought it there and then. he never road it and told me to come get it and pay him latter so i did. still researching exactly what was done to it. the guy who did all the work and sold it has a shop there and works on his own so doesn't answer the phone much if at all. i have been trying to get the whole history of the bike and a list of the mods but haven't had a whole lot of luck. my next plan (last resort) is to take it into a shop and pull it apart and let me know exactly what it has had. kind of embarrassing when asked what the modifications are.
i was surprised my buddy didn't have the information on his purchase.
keeps up and then some to a friends 04 dyn with stage 1 and hyper charger. so it does better than most 88s
but maybe it's the chrome that makes it go faster
hope this helps, wish i could tell you more. i love the bike it is great to ride and handles like a dream.