Beautiful R129
@trader1! agree with everyone else - keep it as stock as possible unless you find OEM parts.
I love my R230 SL500, but it took quite an investment on service, suspension, and plastic interior trim replacements to future-proof it. Once in a while I regret not getting a late model-year R129 with SL1 + SL2 package. Finding one with the Pano roof also is like finding a unicorn now.
R129s are a bank vault on wheels from a build quality standpoint if cared for and they are appreciating when in good condition.