Covered springs for a 39 coupe

[mrcorvair]

My 39 deluxe coupe does not have covered springs.
Also I have no way of knowing if the springs on it are correct.
So I would like to know what year covered springs would work.
I would also like to know the number of leafs recommended for the best ride.
My original shocks are fully functional.
I came up for the front 01A-5310B 10 leaf with cover.
For the rear 01A-5560-B 9 leaf with cover.
I assume for the rear that 78-5560-A 10 leaf had no cover.
Please advise.