If the speedo's only a constant 2MPH off then your tach's screwy or your igniter is... Roll the car slowly across a measured one mile segment of road and see if the odometer is reading accurately. If it's right on the mark just more the speedo needle to set everything right.

And if your speedo is 2 MPH off at 10MPH and still only 2MPH off at 100MPH feel lucky, the speedo was blessed by god himself.

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its 2 mph off at 20 30 40 50 but he is still a cop and wouldnt let me speed so i couldnt test any faster and what did you mean by "more the speedo needle" im sure its just a typo but i cant think of what you might be trying to say

Meant to say, "move". Pull the needle off, and put it back on so it'll show correctly. ;)

cre, the policemen in Oklahoma are anal retentive. Got pulled over for doing 79 in the 75 mph of the Will Rogers. Probably next time I will get a regular ticket instead of the warning.
Can it be fixed, is removing and replacing best? I hate the ideal of having after market stuff blocking my view.

yea i just dropped a link from one of my book marks. I have several companys I go through for oem parts. In fact when I want to buy something I load all of them and see which one is the cheapest.

If the speedometer is off but all the gearing is right you can recalibrate the gauge. There is an arm behind the face which adjusts it my percentage and flat out moving the needle is what you'll do fix a constant offset (ie: it's ALWAYS 5 MPH low).

If the gearing does NOT match you may swap out the speedometer driven gear or worst case swap out the diff to make everything right.

You may recalibrate the gauge to make the speed report accurately without changing any gearing (diff or speedo drive gear) BUT the odometer will still be off.

When changing to a different diff the proper course of action is to change the speedometer drive gear for one the appropriate size or to install small gear box which changes rate at which the speedometer cable spins (there are actually shops that do just this).