oldblu49,
sorry about not responding sooner to your question. haven't been back to this post lately.
yeah, it bolted right up with the same single post out the back of the mirror like the originals. it's not exactly like the original r.h. mirror as far as the profile of the metal backer but only the anal retentive notice and i absolutely love the visibility it affords that side of the truck. i have grain side boards on the bed plus it's a three window, so it has some blind spots which the parabolic mirror eliminates. i think the only modification i had to do was drill out the hole in the new passenger arm to accommodate the "odd" bolt size (probably metric). i could send you a pic if you want. just let me know...