I remember those GAS Honda's. They had 2000 cr250 plastic and alu tank, looked verry good!!
Search for Jadoul on this site, you will find many posts about it.
http://www.jadoulmotosport.com/ This is there site, not much to see on.
It was a nice kit to make you "old" K5 look newer. Only probleme that the tank can't wisstand sand.
The first pic is from a DC Concept K5. They made it for Destry, only he was not alouwed by Kawasaki to ride it.
Had a full kx250 body work and subframe, costem tank and pipe. Don't know what hapent to them.
Second pic is of a Jadoul kit.
Dutchie