2002 E39 Touring Suspension part #s

[WolfmanNZ]

Hi - I need to replace the shocks on my vehicle, and getting a little confused over which are the compatible parts I need.

I have got a data card from the dealer:
VIN: BZ41711 / Model series: 5' E39 / Sales description: 525i / Body:Touring
Equipment specification:ECE / TYPES42 Right Hand Drive

The relevant options (can provide more if required)

0337 M Sports package
0220 Self Leveling Suspension
0227 Sport susp.+low-slung+ride-height ctrl.

I believe I need Part#37-12-1-095-081-M1312 for the rear - I am looking at the Bilstein B3 40-231990 plus its right hand twin. However my mechanic also noted the front left shock is leaking and needs replacement, but thats where I get a bit more confused. What would be the best matching front to get (mechanic was unable to identify a part # off the existing front shocks)

Is Part#35-114062-M512 / Bilstein B6 35-114062 the right match (sticking to the same brand) or Part#31-31-1-096-865-M10 / Sachs 556834 the correct item - or either? Thanks in advance for any advice.