Don't skimp on quality, quite literally you buy once cry once or else you'll do it twice, ask ALL OF US how we know.
That said, you don't need the upgraded rear caliper brackets, the 03/04 Cobra IRS rear end comes with the 5 lug disk already... your hardest choice will be wheels. Go Cobra brakes and do it once, use Maximum Motorsports parts for the suspension.
Nice bike man, let's see the track tires AFTER the track day, that's what people look for LOL. I too do track days on my bikes and have been building my notch to do some track days occasionally as well.
That said, you don't need the upgraded rear caliper brackets, the 03/04 Cobra IRS rear end comes with the 5 lug disk already... your hardest choice will be wheels. Go Cobra brakes and do it once, use Maximum Motorsports parts for the suspension.
Nice bike man, let's see the track tires AFTER the track day, that's what people look for LOL. I too do track days on my bikes and have been building my notch to do some track days occasionally as well.