Best finish craftmanship and materilas uses bar none, major or decent hp improvment throught the power band, yet no to high pitch loud ala twobros or others.
bought mine at a very, very good price from www.gablesmotorsports.com,
call their 800 number and ask for Dan, he's the man to talk to.
Nothing like talking to a human being with knowledge for a change, I was sick of talking to "Order Takers" and "Part time Nurses" like a lot of mail orders seem to have these days.
Hope this helps.
Are we there yet!