I've been convinced it's time to swap out the motor, and have heard various opinions on 3.3 versus 3.5 alternatives. I'd love to hear experienced voices. Also, a couple of topics I'd also appreciate commented on: 1) price expectations for the job (all inclusive) 2) is an M3 conversion just too complicated? (the concept is salivating :) 3) any gotchas or things to be aware of going in? 4) anyone have recommended sources for the work in Colorado?