X2 cosgig.The restrictive 65/66 2bbl is the same as is the larger diameter/scavenging y-pipe 4bbl set-up for 65/66 then they changed slightly for 67. Accurate has improved both. Have Accurates y-pipe pictured on my valiant along with rest of their complete hi-po setup. Pricey for sure but fit is excellent along with performance and sound. Just looks so much cooler than duals with the one big chrome tip IMHO. Waldron exhaust is a less expensive option, but not familiar with their product quality.
