I have been looking for a new right door mirror for my 95 Postal wagon and have not been having any luck. I'd love to spend the money on the jdm mirrors but just cant at this time. So...How bad will it be to use a LHD right side door mirror on my RHD car?

I know there are differences in the glass in the mirrors and differences in the bases, but has anyone attempted it to see how bad it is. I hate driving without that mirror and want to get it replaced asap.