Hi,

I currently have a sub at the back of my SUv and planning to put another in front (between the 2 front seats). Is it a good idea? Appreciate your input guys. Thanks.

 

What are you trying to accomplish by doing so?
It sould sure bring more bass up front, but could mess with an SQ setup, really taxing the subs time alingment, having 2 very different origins for th LF.

 

Just to add a bit more bass. So would it be better to add another 10" sub at the back? Or maybe sell my 10 and get a 12"? Thanks.

 

If you're not after SQ and you'd rather add the sub up front by all means go ahead. Guys do that when space permits. It would bring the rumble up front as well as the bass reinforcement.
I would try it with a test enclosure in the front before you spend a ton of time and the jif you don't like it you could just throw it in the back as usual.