LOL....look at your t-case, if you have a cable going into your speed sensor....then your speedo is cable driven. If you see a plug going into your speed sensor, it's electronically driven. That's the simplest way to find out, or you can take your bezel off and pull your cluster out to find out (which is obviously where the other end of the cable goes into).
Toyota couldn't decide what to use apparently... late 92 and up, Toyota decided to go with electronic and then 95 they went back to cable. My trucks a 93, it has electronic speedometer. Currently in the process of converting it to cable. My wife had a 95 22re 4runner that was cable driven. There's 2 sizes of cables...22re and 22r's share the same one and the 3.0 has it's own.