Bought my gs with a yoshi pipe fitted didn't have a baffle, and I find it too loud.

I suggest you modify the title of your thread to specify "Wanted: Yoshi TRS etc etc"  You might have better luck getting the attention of someone who has one because they might see that title and say "I don't need to buy one of them, next"

Thanks for pointing that out.

I had to buy a baffle last year ("TRS-INS-BK"), I contacted Yoshimura who put me onto their Australian distributor:
Serco Motorsports www.serco.com.au
From memory it was about $35 delivered.