Hi, was trying to find out if the glass on the 71-72 sport mirror LH side is smaller than the RH side. I bought a LH glass thru opgi to replace my cracked one. The glass I received is an exact fit for the right hand mirror but is just slightly too large for the left side. The mirrors I have are cutlass housings just not sure if the insides were swapped out as they were bought used. Thanks in advance for any info.