you can, but groupbuy4celica said it will jump when you start it.
"remote start with a manual tranny.. makes the car jump when you hit the engine start switch, kinda makes it leap forward a few inches.. dont ask me why but it happens.. i know this from my many friends that had gotten engine starts on their cars.. other then that this alarm itself is a pretty awesome unit.. let me know if your interested!"
The car will only jump if it is in gear when you remote start it. I installed it on mine and as long as you're in neutral it won't move at all.
Seeulater, If you want I can help you do it when I have off. I'm off on sunday and monday after x-mas. If Not I can walk you through it.