Hey all.

Did some searching but didnt turn up anyting useful so decided to post and get some oppinions. On my previous bike a honda VFR I switched out my coils with a set of msd powersport units in an effort to use all the air and fuel my tyga/ HRC parts were feeding the engine. in general i was real happy with the results but sadly i moved on with that project and now i am with my MC21. Has anyone used aftermarket units on these? the reason being is one of the ones i have on it is a scooter coil that came with the bike on purchase. Big bike parts are hard to come by here and spendy to ship in do to customs. I have family coming to visit so that will be my chance to upgrade or go back to stock. here is the link of the unit i am interested in, pro coil 42921.
http://www.msdpowersports.com/coils.html
any input is appreciated