Paul
These photos are of my G-Force chassis, which was a part take off from RMC.
This chassis was sold new to the original owner circa February 1997 so I think the G-Force chassis had been refined somewhat from anything build say around the start of the 90's.
I say that as your chassis appears very basic in set up and rudimentary in design but that's not to say it can't work.
Hope this might be of some help.
Cheers
Steve