Would I be able to fit a 8" kicker sub in replacement to the bose factory sub? thanks

 

it will fit with some hacking and glueing and cussing

 

The cutout is designed for a 10" sub so I wouldn't imagine that an 8" free flow sub would give a direct fit. Why not just look at a 10" Kicker free-flow?

 

I tried it by making a mount for one Kicker open air 8". The other 8" sat in my '99 TL sub stock location. (no rattle)

Did not like the effect in the Z - lots of rattling... Drove me crazy!!!

So, I ended up making a sub box for the rear hatch area. Since I was at it, decided to take the other 8" out of the TL and put two in the box. The bass is tight and pounds without rattling...

 

btw - I'm using Kicker 04SSMB8s

 

ofcourse it will fit. 10" with seal box still can fit.