I started this rear bar info last year. Been waiting on Ernie since! I returned a rear bar because it just did not fit. I spoke to Ernie and he said he would make me a rear straight bar (cougar) in 5/8. Nice to know there’s a part number now! Hopefully he gets some done. Here’s the old post. 5/8 in straight rear sway bar interest - Cougar Community - Classic Cougar Community Forum