The N20 is quite a power upgrade coming from the previous base 3 series offerings.
If you drive the 328 first I think you will be happy.
If you drive the 335 first, not so much.
E36/7: Dinan/RMS stage 2+ blower@11-16lbs of BOOST! 18" BBS LM's, too much more to list
F30: 6mt, SOLD
'06 Saab 9-5 wagon 5mt AERO+ TUNED