Aftermarket speedometers

[lairgnen]

how can i be sure an aftermarket speedo is the right one for my 1991 cb750 the bike got flipped and the old speedo is crushed beyond my ability to repair and i cant afford factory parts i have found a few good looking speedometers but i am unsure which to buy as that they dont say on the clearly "this is for a nighthawk you big fat idiot" an i need that kind of affirmation.

[pickandpray]

why not pick up a speedo from ebay for your specific bike??

[lairgnen]

I have yet to find a factory part for it on ebay, i am looking for something that will work properly and not look like the oridginal.