Possibly for the serious tracker, and absolutely for the full out racer. Production of these full race rear trailing arm pickups, (replacement for the factory bushing setup), is ready to go for the Mini R50 and R53 (non GP) . The picture shows the prototype which were installed in a devoted track day R-50 well over a year ago. Still in use today with not a single issue, and this is a Vermont car. The new design looks the same but with refined adjustments. This is absolutely the most friction free, zero slop rear trailing arm bushing replacement available for the Mini. Gives you the ability to adjust toe and track. Corrects caster and anti-dive in lowered car. This is a relatively easy installation. Some grinding needed and also possible slight shifting of the fuel filler hose. Built in my shop by me per order request. Not an inventory item. Will take the first few orders at $500 for a set. Includes everything needed. Please feel free to email me with any questions at [email protected] Greg V Please ignore the front control arm as it is still in refinement stages after being tracked for a season. :ihih: It's the only pictiure I have at this time. Long story.