Here is my latest model to get a makeover, Racers set 8145 Ferrari 599, has been fitted with suspension front and back, the front needing a bit of work due to being close to the front engine mount. new style diff and diff block at the rear, the drive has to go to the back of the diff as there was no room under the 'hand of god' steering gearbox, a revised steering rack (to eliminate slack) also working steering in the car, right hand drive.
Excellent mods, and just like the Enzo it really needs these additions. I am very envious of your Ferrari collection. I have the two F1 cars but I don't have this or the Enzo.