If you wanted to keep your factory powertrain warranty, you'd need a Hyundai dealer to do it with new parts.. As santa06 points out, you'll also need a whole bunch of other stuff.. Like a clutch pedal, clutch linkage, sensors, a new PCM, plus a new shifter and console to name a few things.. Add the labor to install all this and it could easily cost you thousands of dollars. A trade would be your best bet.... http://www.hyundai-forums.com/members/201906-santa06.html
Dang haha, I really like the accent and have big plans for it but the only hick up was when I got it they literally had no manuals for the Hatch. I was planning on trading it in but when I called in recently they still didn't have any, so it was a little disappointing. All in all its not to big of a deal i just wanted to see what it would be to do, my my shifttronic aint that bad either.