Which CVD's for my Emaxx

[monsterbatix]

Yup, another newbie. I'm upgrading to brushless. I wish to order the FLM Ext. chassis and all the CVD's from RC-Monster, but I'm not sure which ones fit my '06' Emaxx (widemaxx?). I think I want the SuperMaxx CVD's (6mm axle, for 7.5 diff's) but I don't know if I have 7.5 diff's as it says in the description. If I don't have 7.5 diff's, how do I specify the correct diff's from RC-Monster? Also, is there anything else I might need to install the FLM Ext. chassis?

Thanx, Steve