There were three versions of this kit. The first version features the light blue/grayish colored plastic, green glass and a mail in form for the sleeper kit. The second version has white plastic with clear glass and the mail in form for the sleeper kit and the third version has white plastic, clear glass and a sticker on the box that said "sleeper included!" and had the seperate sleeper kit in the box. All the sleeper kits were molded in white plastic only.
I have a started kit that's molded in white but has the green-tinted glass. No sleeper in my box.
At least one of Fujimi's original three '66 LeMans kits (not sure, but I think it was the light blue car #1 that finished second) has a "smooth" roof that doesn't have the Gurney "bubble" on the driver's side door....not sure if that variant of the body has been used in any of the other versions.
I have one of the 1967 Daytona kits, a red car #3. It is Fujimi kit #12147. It has quite a few body color and clear parts that weren't in the original releases or the Revell versions. These do include add-on flares for the rear fenders. My kit has a red body and black chassis parts. Interestingly, the box says it is chassis 1047, same as the red #3 '66 LeMans kit in your photo above.