Somewhere recently I saw a Suzi 140 for $6300.00 new. I'm sure that was without prop, controls, idiot lights, tax.
Find a cheep one online and stick it on yosef. It's not that hard, I have put mine on twice.
One suggestion, you have to have the idiot lights (also known as the system monitoring lights, or something like that) to make it run, get the tach with the built in idiot lights, its about the same price, or was, and it is one less hole in the dash.