[BMWZ4RIDER]

I too want to install either Eibach or H &R Lowering springs. Here are some relatively inexpensive mods I did and am in the process of:
1. LED interior lamps for the doors, foot wells and map lights- 7 total lamps needed. I went with the Phillips Lighting 5000k LED lamps- cost $120 US and it blows away the old incandescent OEM lamps installed for light output and color temp of the interior.
2. I just ordered from Bavarian Auto in the US, 12 OZ Space Gray Metallic spray paint and clear coat, $29.95 US per can and will be painting my roll bar covers and front lower grill insert bArs so all are the body color.
3. Paint brakes/ calipers and backing plates- cost me $20 US and 8 hours time.
4. Considering plastic dipping my lower rear bumper section to look like a diffuser. I saw some nice jobs on this forum
My 2 cents.