CRT.5 Ext Chassis Questions

[DRIFT_BUGGY]

I am wanting to buy a CRT.5 and convert it to brushless. I was looking at the kit http://www.rc-monster.com/proddetail...od=rcmcrt.5kit
I have a radio and a normal size servo (94358z) It says you can use normal servos on the site.
1) I also have a 6900kv Mamba Max esc combo. Will this be fine for the crt.5?
2) What pinion and spur gear do I use? (pitch and brand?)
3) Is there any type of modifications I have to do to the chassis?
4) Will 6 cell nimh fit the chassis?
5) Do I have to buy a 1/10 truck body?
6) What wheels fit?