E-Revo for track use

[joeling]

I have just purchased 2 E-Revos one for my son & one for myself. the intention is to run them stock or close to stock & get his rc driving skill level up & have fun along the way. Now that the units are on the way from USA, I am thinking of upgrading them to improve handling. I have bought some upgrade parts together with the trucks :

I) Revo/Slayer Heavy Duty Servo Saver Spring - I hear that these will improve servo response. So I bought them

2) Revo GTR Shock Springs-orange, 3.2 rate (2)

3) Revo GTR Shock Springs-gold, 3.8 rate (2)

4) Revo GTR Shock Springs-tan, 4.1 rate (2) - I heard that stock srpings re too soft, so I bought some harder ones

5) Revo/Slayer/Revo Platinum Front + Rear Sway Bar Kit - These will improve handling right ?

6) Revo Platinum 17mm Wheel Hubs and nuts, blue aluminum (4) - I have many 17mm LPR wheels so I want these

Are there any parts that warrant an upgrade. I hear of RPM truetrac (spell ?) rear arms setup. Will these help to improve the truck ?

What do u think ? Any other area to improve to make the trucks better / more durable ?


Left side of track


Middle of track


Right side of track

Regards,
Joe Ling

PS : How about this center diff thingy ? Will it fit into the E-Revo gear box ?