>>16752903
I think you need a lot more knowledge than just blueprints to build these things. Besides, I doubt many of the parts that an engine designed before 1973 would depend on are still in production.

If the system was developed to a mature and flight ready state, why was there not a single flight test?

Why does the USSF demand flight tests of launchers, if static ground tests are good enough to show a product is mature?