I know that the 42-48 Series66 is essentially the same platform as the Chev Fleetline, Pontiac Torpedo etc. What I am trying to find out (without spending $100 on a parts interchange book) is what front fenders are interchangeable, what rear fenders are interchangeable and what doors are interchangeable. I am not a purist so if the difference is a trim detail etc. I don't care. I just want to make it whole and get it back on the road, it is a barn find ff the road since the 70's.
Any help is appreciated. I am putting this car together with a group of high school students and we hope to get it to the dragstrip in May.

 

I have a 1948 Hollander interchange .
This is what I can tell you.
Doors;
42 thru 48 Olds 66 & 68 Club Sedan (style # 3507) will fit.

Front fender;
46 & 47 models 66 & 68 will fit.
1942 66 & 68 may also fit with minor modifications.

Rear fender.
46 & 47 66 models will fit.
1942 66 & 68 models may also fit with minor modifications.

It makes no mention of parts from other GM makes that will fit this Olds.