I installed my lighter ebay clutch spring today. In the parking lot of a plant nursery in -5 degree weather. Was actually really easy. I drove the first half of the day on the oem spring and then rest on the new one. Can't say I felt much of a difference really.
These guys keep popping up in my social media
https://www.fdfraceshop.com/pages/about-us
https://www.fdfraceshop.com/collecti...-rear-grip-kit
The video on the page seems interesting. Not that I need it but I wonder if anyone has looked into this before. Also they are local to me which is nice.