Originally Posted by CraigM

Could be difficult, but not impossible. The standard r40's forward mount has a post where the screwhole would be on the hara mount, so there will be a few mm offset from the deck hole compared to the hara mounts. You will also run into trouble with the rearward mount because the standard car uses the throttle servo's bracket as a spacer for the rear mount, so if you use the same mount on the hara top deck you'll need to find a spacer to put under it or your servo wont be level.