Yes, the car does have additional suspension pieces in the form of heim jointed dog bones and what looks to be a derlin insert in the front arm. I am still waiting on the list of "mods" done to this car. He also gave me some sway bars (they are grey and the rear has two holes for adjustment) and hard bushings for the mount. I also don't know what brand they are.
I can see the rear diff and sub-frame still has the original inserts.
What will switching to the M3 suspension arms gain me?