[Tamiya TNX 43508 - Need Parts urgently!]

Hi ive managed to sort the starting issue- I have attached a traxxas EZ start switch which connects to a battery. 

[Tamiya TNX 43508 - Need Parts urgently!]

Hi Guys- 
I've inherited a Tamiya tnx- 43508 - I need some parts urgently

Tamiya 7304052 (part number) - 7.2 electric starter unit for glow engine
I also have some questions -
1. Which Body shell /universal fits best for this r/c
2. What are the best wheels to upgrade to- Would the louise brand fit? and what size hex is on the tnx?
3. What brand shock/suspension I can upgrade to?
Thanks in advance
Regards
Zak