4 speed on 1993 Volkswagen Golf

i have a 1993 Vw golf gl lll and i thought it was a 5 speed but it turn out to be a 4 speed, and it over heats

Asked by for the 1993 Volkswagen Golf
not really seeing that you have asked a question here...
My Golf is 4 speed and it only goes up to 60 mph is that a normal for a 4 speed??
is there anything i can do to increase the speed????

Thank you