So I finally got one of my dream cars, 91 m5, while cruising at 135mph my water pump failed, broke the motor fan blades and punctured the radiator. Got it fixed, rear shock(self load leveling system)has a leak.

Can someone with knowledge let me know if i should eliminate it or swallow $1050.00 to keep it. How much of a performance difference is it? It's not a money issue but if i eliminate the system is cheaper. I love the way it handles, but if eliminating the system is an upgrade then i'll take it out....any advice will help a lot.

thanks in advance