Hay yall if have a 300ex with a little mods done to it..........

i was wondering if yall would answer some of my questions & please tell what all they make for the 300ex

1. TC Racing pipe-1. prices
2. pics
3. what types or model pipes they make

2. Sparks X4,5,&6
1.prices
2. pics

3. Yoshimura pipe
1.prices
2.pics
3.what is the best pipe they make