Its also a 4 cylinder im considering buying.

dude trannys are so hot mine goes up to about 30mph and 60mph if its anal

with less than 100 hp and no overdrive its very slow...prob go 70 mph [downhill]

You will probably be able to make it up to all the speed limits, but not much more than that.

You will probably also find out soon that the fuel consumption and the noise are going to be the more limiting factors of how fast you can go...