I've been making a switch from trail/mountain biking to road, and have so far bought lighter and narrower rims and slick 26x1.95 tires to make it a tad "faster." Thing is, I'm looking to join a cycling team/club for road riding (not ready to be full-blown racer yet) and worried a mountain bike won't be suitable for road races I plan to try out. So is it possible to replace some components to make it more characteristic as a road bike? Aerodynamics is the primary factor I believe, with weight a close second. But hey, I'm not sponsored and not even in competition yet, so I don't need the very best anyway. Here are some info on my bike to compare to those in road bikes:
Access frame, Mavic XC717 rims, Michelin Transworld City tires, Deore drivetrain, Rockshox seatpost, Syncros 1in. riser bar, no-name -17' stem, 02 Rockshox Judy C fork, LX brakes. Riding position is nearly as low as road riders I see.
I'm on an extremely tight budget, so I can't simply fork over $600+ for a new road rig (another reason not to be a full-time racer..yet). I figure with that amount I could just upgrade my existing bike and have it comparable to an entry level road bike as well.