T4 V2 or V3 - how can i tell?

[vrooom]

I got this T4 which comes with gear diffs and carbon towers but unsure which version V2 or V3...

is there a telltale sign on the car whether its v2 or v3 ?

[Chalkie]

Yeah you can tell by the rear center driveshaft, 78mm for V2 and 83mm for V3