I also came from a Miata, but mine was boosted with 250whp.
Love the switch to my 135i though. Get the BMW Performance short shift kit, I have it and love it. Paired with the BMS clutch stop, the feel is great. I hear that the BMW Performance exhaust and catless downpipes sound pretty good...
Friends by
Jake Spence Photography, on Flickr
Smokey by
Jake Spence Photography, on Flickr