Hmm, couple of different ways you could go with this one…….
The E39 chassis is a great platform, if you are prepared to deal with the usual E39 bits and bobs, this is coming from a past 530i touring, + current 540i m/sport owner.
You could go the tricked up i6 or the relatively standard v8 option. Loads of performance options for the i6, however to wring more power out of the M62tu can be expensive, but your starting from a higher hp / torque level.
I currently have a 1999 540i m/sport that I’m about to do the 6speed 420g conversion on (build post coming soon) + a few intake and software upgrades on. This will be more than enough enjoyment for me as a Sunday cruiser.
as far as handling, I don’t think you would notice too much difference between a 530 v 540 on day-to-day driving, unless you like to drive on the raged edge day-to-day. Im too old for that sort of carry on, but the torque from the m62 is pretty intoxicating! As I’m sure the hp from a turbo i6 would be!
If your after max power for minimal effort, go the 540👍
current project: