Check out this picks of partialy build serpent and let me know what model it is.

2

It is a serpent impact (looks like the M2 version to me).

Thanks for info,by the way chassis is 39cm long
Now where can I get instruction manual for it?
Front upper control arms are missing,what's the best place to get them?(new or used)

http://www.mytsn.com/general/

this should get you there,might have to hunt around the site though

My mistake, at 39 cm long chassis, the car isn't an impact. Upon further review, it is probably a vector. Do you know how old it is (this will help identify which version it is)?

I got in touch with Serpent Head Office in Netherlands and the manual for my Excel mk2 is on its way. Thank you everyone for your efforts!