Domingo -
I own both repro bodies: Lotus 30 and 40
(sorry, they are not for sale) I purchased them a long time ago from Hobby Link Japan. They no longer have the Lotus 40. The Lotus 30 (which I realize you already have) is
HERE.
Your painted car is a Lotus 40 and appears to be almost identical to the repro body that I have, although mine does not have to two posts on the underside, in front of the rear wheels.
The windshields are not interchangeable. Looking at your photos and my bodies, I would guess that the windshield from the repro-Lotus 40 would fit your earlier car. It is slightly longer (the front pin is farther forward) that the Lotus 30 item. Also it is a nicer piece: the bulge in front of the driver is more finely molded with less distortion. The molded-in windshield wiper is smaller and on the driver's side. On the Lotus 30 it is centered in the windshield.
Good luck in your search. Tamiya bodies show up on eBay occasionally, although they tend to be spendy. You might also try modeling forums on Facebook. I don't use Facebook, but have a friend who has found great bargains there.