I installed Spin tech stepped subframe connectors on my 00R in order to retain the side exhaust. I do not see them on there website anymore so you may have to contact them for availability.
https://spintechmufflers.com/
Paul.
I have never found an 00R specific wiring diagrams. I've only used a 99 cobra to reference from.
I've installed a 99 cobra recall fix YR3F-12A650-JA computer into my 00R and then reflashed it to the 00R calibration so I could tune the engine. 01 Cobra computers are different than the 99 cobra...