Differences in years....?

[**grumpy**]

I have a 63 GMC suburban.

I see alot of stuff advertised that it fits 60-66.
Then I saw doors that showed they were for 64-66...Why not 63?

Can someone who really knows these things tell me exactly what can be interchanged...!>?

I might decide to replace my fenders, hood, and doors....Maybe.

And replace my grille also with a chevy grille or a custom one like "Fuel Pump" has.

What about suspension? is there differences as far as 62-66 goes?

Just some basic education...

I appreciate it
Tim