If I get a V4....

[associated35]

What are the critical option parts that are needed please?

[HarlowS]

None, car is really good out the box, never had to change anything or upgrade.

[jpmatrix]

The only upgrade you will need is the tresery alloy servo saver as the plastic kit one is weak.

[associated35]

Sounds too good to be true lol. What diff oils then please? Used to ball diffs rather than gear....... Sorry

[HarlowS]

I tried lots of setups but settled with 10k front and 5k rear

[Col]

I've had the plastic servo saver in my V3 for 2 years...

[av4625]

i had the plastic one in for ages and i heard people saying that they break them and i was like how? then i looked at the part of mine that is hard to see when in the car and there was a slight crack in it. so i got the durango alu one, but car is fine without upgrades, i personally like some of the bling and alu hexes but thats personal preference

[associated35]

What springs too? Mid west is my region normally so astro and occasionally grass. Get it all ordered together....

[charlesk]

What springs too? Mid west is my region normally so astro and occasionally grass. Get it all ordered together....

Kit springs work fairly well tbh. Saying that I preffer red fronts (dark blue is kit) with kit (light blue) rears.

Upgrade wise I've got a lot on mine but 3 that I would say they offer distinct advantages.
Rear diff inserts
Rear diff holder
Servo saver arm
The 410 is a strong car, and these aren't 100% nessesary but are worth it. Hth
Charles