t-6's are a great "trail/ rider pipe with proper porting they make KILLER botttom end and make the bike VERY rideable and tqy. just need done right the rebuild alone will make the bike seem new to you.
i redid a STOCK 04 with new top end and t=6's on the road it steady pulled from a 450 with a big bore cylinder on it. stock airbox, proper jetting, and K+N filter kit. it was a blast in the dirt..