There are basically four choices I see
1- Find a pair of originals. Of course condition, both visually (external condition) and if they work would have to be considerations depending on how you are going to use the car
2- Find a pair of look alikes, or at least adjustable shocks that are close to looking 100%. Some will use later Stryders though there were many versions over the years and the external markings will be different (but difficult to see once installed) than factory. Different markings, size of upper washers or even lack of them. Different bases and shapes of the main tube as well as markings all come into consideration when going this route
3- Some will use current aftermarket shocks and add the "special" top washer to attempt to produce a shock that at looks original from above (from the engine compartment view)
4- There are reproductions of at least the AUTOLITE stamped versions - don't think they make the FoMoCo version currently
Allot depends on how you expect to use the car, and how you want to present the car as well as your pocket book. From there you can figure out where you want to be in the scale from sort of correct to just like it was originally . Hope this helps ... all comes down to choices.
Sure some of the others will comment