Upgrade 1-way starter to 2-way?

[95golf]

So I got a cheap Nustart 1-way starter installed from Bestbuy a while ago, and was wondering if its possible to upgrade to a 2-way without buying a new "brain" and just buying the remotes?

the brain unit I have installed in the car is http://www.bestbuy.ca/en-CA/product/firstech-llc-firstech-car-remote-ft-6200s-ft-6200s-cont/10175293.aspx?path=db95d2ef1ad536d51cfda1d7a1876d23en02

can i just buy those compusstar 2 way remotes that futureshop sells and use them with this brain or do you have to get a new antenna, etc?

[core_upt]

new remote, new antenna; brain is the same.

[95golf]

alright thanks,
so would something like this have the antenna in the box? or is this just the remotes?
http://www.futureshop.ca/en-CA/product/compustar-compustar-2-way-led-remote-pack-rf-2wg5-sh-cn-rf-2wg5-sh-cn/10176451.aspx?path=4fa6a597ae7e70ea3f1ec17c58c26ae8en02

[silvercivicsir]

Yup includes two remotes, a temp sensor, and antenna..

[msommers]

My compustar 2way remote is frigging huge!