Has anyone used the Akra y-pipe replacement with any other slip-on system other than the Akra slip ons?(example: Akra y-pipe with Yoshi slip-ons) It appears to me that the Akra replacement for the stock cat, that fits the stock cans, would fit a direct replacement slip on system such as the Yoshimura TRC slip-ons. Anyone have any input other than you should have just bought a full system!