I changed my S5 Aero for an early Aero chassis plus 8 and apart from the reduced load space I have been more than happy with the car from a performance and fun perspective. It feels quicker and handles better. Had SSL suspension upgrades on both but feels like the Plus 8 upgrades have a greater benefit on both ride and handling. Had two European tours so far, usual hood and door leaks have all been resolved so really pleased with it and hope you will be with yours also.