Sure!
LOTS of stuff happened after 1964, the most significant being the change in 1969 from a swing axle rear end to an independent rear suspension with drive axles and CV joints (just like modern cars). This, alone, improved overall handling a whole lot.
Also, sometime during the 1960's (1967 I think), VW changed from a link pin front end to a ball joint front end. Lots of controversy there, as many people (particularly drag racers) say the link pin is easier to adjust and holds adjustment better.
Lastly, in 1971 VW migrated to the infamous "Super Beetle" and went to a McPherson Strut front end, which improved handling even more. HOWEVER!! It was a phase-in process, so some 1971 beetles had the old torsion beam and ball joint front end, while others had the McPherson struts. This continued kind of randomly throughout the year until old factory stock ran out at the various factories. They are definitely NOT interchangeable, and because of the higher top of the strut towers that strutted Super beetle pan is not useable on a Speedster unless the entire front suspension is removed and a conversion plate installed to accept the older style torsion beam.
Interestingly, I believe that Brazil made both the swing-arm beetle as well as the IRS version (and also torsion bar and McPherson Strut SB's), whereas Mexico only produced swing arm bugs up until about two years ago. I do not believe that the old-style VW Beetle is being prduced anywhere else in the World now.
Also, in terms of part quality, ANY German-made parts are the highest quality, Brazil is a distant second although usually pretty good, Mexico and Asia (Taiwan/China/India) are a far distant, and questionable, third.