I have 2 12's in my coupe but i no longer have much of a trunk The only reason i have two is b/c it came from a prior install and i don't own a single 12 box anymore. I feel not having a trunk is better than plopping 200 down on another box right now.

And digital the convertors you listed work. The more expensive of the 2 'looks' nicer, but both are most likely similar

 

Sweet!! I will but the one from tweeter then! (Comes with free shipping too unless you see something better...)

Thanks