Aftermarket Mirrors

This is a bit long winded, but I was wondering if there is some sort of replacement mirror (not the entire housing) available that does NOT have the small convex spot mirror that is built into the mirror face. I find that it is a PITA to have to try to look past the spot mirror to see the area behind me, such as when changing lanes or merging on to the expressway. If it were placed low and to the inside, it would work better in my opinion. (30 years of driving a transit bus experience-spot mirrors are usually low and tucked in tight, allowing unblocked viewing of the entire main mirror`s surface) I like to use the side of the vehicle as a point of reference when using my mirrors, which I can do with the main mirror OR the built in convex spot mirror, but not both at the same time as the spot mirror`s point of aim is a bit more outboard than the main mirror. I have the standard package (321A) and didn`t know if the higher packages have the same issue or if the spot mirror is adjustable and separate from the main mirror.
I would love to be able to recitfy this issue by using a stock or aftermarket part. At worst I will have to use some sort of puny spot mirror purchased from O`Reiley`s Auto Parts (or some such place) but would rather not.
Thank you!