When I bought my interior, I did not think that I would put armrests in the back. Changed my mind and now I need some measurements to put the holes in the right place in the panels. If some one has their panels off and could take some measurements for me I would sure be grateful to them. maybe a picture would help?

Haven't had a rear-armrest RR for a long time (the one I kept is a base-trim '68), but this is what I remember:
The armrest screws go into retainers that snap into the inner quarter panel; if you're intending to screw them through the interior trim panel they'll rip right off. Backside of the interior trim should have locations marked for the holes. The clips are angled as I recall. Best to remove the back seat to get the quarter trim off.

Yep, I thought that the new panels from legendary would had marks on the back of the panels but no. The clips and everything is there in the side for the armrests.

Here are pics of the door panels from that 68 RR I just parted. Hope these help. If you need others PM me

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3 Do you need the armrest bases?

Thanks for the pictures, They were just what I needed. You guy's always come thru. I sure did not want to ruin my new panels. Thanks for the offer , but I already have the bases. Boy were they hard to get in blue. thanks again rrunner.