I got replacement leather for my torn driver'* bolster from a Le Sabre in a junkyard- then matched it to my '92 SSEi with leather dye (paint) from my local shoemaker. The back seat bench cost me $30 and has enough leather to do at least two bolster repairs. I removed the cover, pulled the stitches, and used the removed piece for a pattern. I also own a commercial sewing machine that sews leather. Most guys ain't gonna' have these. But you don't have to do too many re-upholstery jobs to make the $300 price (Harbor Freight) pay for itself.
And all you have to do is sew just a bit away from the original perforations in the adjoining vinyl and leather to hide the old seam. My job wasn't perfect in this regard, but you would never know it unless you were looking really carefully.
Just my $.02