Welcome!
OG here, in terms of tenure on this board(s), my X's vintage and my age.
But, we all get along, some posters here really know their shit, and all the forums are worth a read, in addition to this specific E53 sub forum, imo.
Nice X, needs bigger wheels imo, and your photo hosting site looks like one of the click bait OMG! sites,
GL, mD