[Elecraft] Upgrading a K3?

[Eric Rosenberg]

I've just pick up a bare-bones circa 2010 K3/100

 

I have a couple of questions regarding upgrading it. 

How can I tell if the mods (as opposed to upgrades) have been done? 

 

In addition to adding filters, I'll be installing a KSYN3A, and K-Pod (power
mod for the K3).  

 

How hard is it to install the upgrades, and do I need the anti-static mat,
wrist strap et al to do them (I don't have them).

 

Thanks & 73, 

Eric W3DQ