I have not seen any late 40 footers. Not sure but towards the end of production I was told CC directed efforts on the 45 ft. Mine is a 98-99 model. I think some 2000-2001 45s were built on the DinoMax chassis., even a few with slide outs. Somewhere the records still exist, I would start with CC , they may give you a direction to follow. Mine was the cover coach for the catalogue w Gillig chassis. Gillig has records on how many chassis they built for CC. That I know, as after a few weeks Gillig did confirm my chassis and specs for the tag I needed as the axle broke, that was 2 years ago. Costly fix as we had to start from scratch.