the Dynojet kit I purchased was around 90 Canadian at Royal Distributing.
It came with a variety of different size jets, and the instructions were pretty clear as far as installation goes and which jets to instal.
between those instructions and a shop manual the job was pretty straight forward, about 6 hours total and tank on and off finding vaccum leaks and tuning a couple times.
I lost one of the amazingly small o-rings on the vacum covers (found it after a week and a couple rides sitting just on the engine near the pump)
there were 4 plugs to instal inside the carbs, not sure what they were for but maybe it was for the emmissions stuff that was mentioned before?
only other thing I had to play with was the idle mixture screws, instructions said to have them 3 turns out, mine idles better with 3.5-4 turns out.
Either way, most worthwhile mod I've done so far, runs really smooth and pulls really hard. Goes good with the sprockets (-1+2)
Maybe next year I'll do the speedo healer so i'm not always cruzing at 220kmph