Hi, I'm new here and judging from what I read so far I'm in the company of some real experts here.

Having by now contracted a mild case of Mod fever myself I wonder it the following interior mod is possible at all and what it would cost in work/materials.
My dad has an E38 728 with the BMW phone. The sliding central armrest has the phone and to each side of this there are two softish leather covers, covering small storage trays - very cute, very practical too.
I have an E39 with the sliding armrest which has the phone tray, and to the sides of that two rather hard leatherette pads (ouch), no covered trays. I'm toying with the idea to put an E38 armrest into the E39, to increase comfort and storage space. Anyone know if that's possible? I don't know how the E38 armrest looks from below.

Some of you will say: Why not put the full-leather "Euro" armrest in, the tilt/(slide) version with the "large" storage tray beneath and the leather-covered pad? Reason is that I need the phone tray and I've used the space below the armrest for the Nokia phone electronics box already (and indeed, I could theoretically move that to its BMW stock location unter the dash but I'd have to take apart most of the dash for that - no way!).

Thanks in advance!