The death penalty 21 is a strong sub if you can find the 2010-older magnet. The new one has horrible coil rock issues. I had 2 of them in 18s and completely trashed them within a few weeks on burps cuz of the coil wobble(then when that was the only damage incriminator told me I had been bottoming them out, when clearly the pole piece and inside of the coil were all destroyed and scratched to hell).
Wow, didn't know IA dropped the ball like that. I'm awful happy I didn't do that build yet. Thanks for the info.
1978 F250 2wd (460 c.i.d. / C6)- soon to give up the powerplant to an '80-'86 F150
White 2000 Grand Prix GT coupe One still slow and loud... other one scoots just a bit.