I had a Muzzy 2-1 on my 1990 ex, liked it alot but now that I have the Sarachu slip-on cans on my newer 2002, I can say that they sounds alot like the Muzzy but does not tend to scream as much at higher RPM than the Muzzy. Rejeted I made just as much horsepower as the older bike (with the Muzzy) on the dyno at Motion Yamaha here in Dallas.
List of mods to my bike:
LockhartPhillips front turnsignals
ClearAlternatives brake lens
Superbright red LED brake lights
Rear fender hack
Homemade license plate bracket
GSXR adjustable dogbones (raise backend)
Kenda 110/70 140/70 tires
H4 Eiko Super Blue headlight
Mobil 15w50 motor oil
Hope you like my baby.....