As far as suspension, my car will have global west stuff and wilwood brakes. I struck a deal with global west and since they are a wilwood dealer, got it all from them. Also got QA1 set up all around. However, since it is being assembled now, I can not comment on performance yet. Any of that could be replaced if you wanted to go thru the trouble, with the rear brake set up being the hardest issue to address. But who would ever want to go back to the pitiful original single brake set up if you had good ones on the car?
Remember, those sleds are heavy, so stick with the 389 or something else with plenty cubes
