i currently have have a set of boston sl-80's up front and a set up pro-50's in the rear, well as luck would have it my cousin just took out his 2-3 month old z6's this morning and is having all morel components installed into his sti, i guess he landed a sponorship or something from a local shop...so hes going to let me get them on the cheap cheap, so i was wondering if i should run the z6's and the sl-80's or the z6's and the pro-50's? i was going to put the z's in the back and the pros in the front, i like the 80's a lot but, im not sure, im thinking that the pro are louder....any suggestions or opinions?