Thank you very much!!!
I was able to assign the car correctly. Fuji 1989, KENJI T drove for the team "Advan Alpha Tomei" and his brother for the team "Advan Alpha Nova".
Upper part is Winnebago logo (see attached pic), I'm guessing the black box on the left is Team GS-Sport logo since he drove Team GS-Sport - F&S car. And the text underneath Winnebago logo is probably the same as seen on the windshield of Markus Höttinger's #44 car in '79 (see link to gallery below) "Wohnmobile Autohaus Gerhard Schneider Freiburg"
Hi Thanks, I had worked those two out. i was after the one underneath the Dunlop and between the Rioja and Dunlop logos. I would like to do the 75 car after if I still have motivation and a descent high res preci spark logo to work with
You could write the photographer a message. Usually they have the uncropped, uncompressed images at hand. If you ask for a crop of that car, I doubt that would be a problem.
Most likely this is him: https://www.facebook.com/markus.berns