Stock 65 C20 Ride Height

[BAMO]

Anyone have information on 65 c20's stock ride height/stance?

I want to lift the truck a little using some slightly longer springs but I also want it to sit level. If I bring it up an inch in the front, would I need to add an inch to the rear springs as well or would I only need .5" inch to get it level.

I know LMC shows something similar for lowering for the 67-72 trucks, but haven't found anything for the 65.

Any help would be appreciated.

Thanks,
Frank