Upgrading ZM2 super pocket bike (=GS-57 ?)

Hi everybody !

Perhaps my project is quite special. Sorry for my bad english (french).
I recently bought a ZM2, removed motor & battery, add an Kelly electric hub and controller with a LiFepo4 battery (48V) , put a 12V converter, changed lights with power LED (add rear light too because there was just stop light), add an battery analyser (digital speed, consumption...), add rubber because a little afraid of plastic quality...

So what ?
I haven't finished yet and, since I live in Canada, I have time before using
I noticed shock where very "hard", probably because motor as gone but probably too because poor quality.
Since I need to use this bike on a "road" not very flat, it would be great I have soft quality schocks (rear and front).
Have you idears for doing this at a reasonnable price ?
Thanks

I joined one picture for this time, showing hub and controller.

Attached Images

07032009A.jpg (92.4 KB, 21 views)

so you've ripped out the petrol engine and replaced it with an electric motor?