Marco!
Allow to express admiration of perfectly executed cockpit.
The impression of the realistic plane cockpit at viewing appears.
I want to pay attention that the top part of the instrument panel for late series in John's message is similar to a detail from my set (D). But it differs a little, as I have made the top panel for I-301 (Fig.109 from prototype I-301 TO). There are small differences on an arrangement of devices.
I can't precisely tell about radio station position on LaGG-3 a series 4.
Probably, the arrangement became already such as we see on photo series 6-7.
But there is a photo with the signature "LaGG-3 a series 4" (but I don't know, on what basis the choice "series 4" is made.) where the radio station is located at the left and it is necessary to use a detail (B) from a set.
Similar arrangement of devices we see and in the book "Flugzeuge Sovjetischen Luftwaffe 1942"
In these photos instrument panel LaGg-3 of early series (no later than series 4) but to define precisely 1, 3 or 4 series it is not obviously possible, I am afraid.