Heavyweights are built to what the customer wants from dual .3 ohm coils, dual .5 to whatever. More for SPL or more for daily. SQ? NAH but sound good for daily beating yes.
Three Heavyweights in a pro stock s-10 box under the window and behind the seat with all factory cab is the LOUDEST Pro stock vehicle in the world. 164.x outlaw and 160.6 on the dash. In USACI.
If you want to run 3-5k daily they will work well. If you have 1500-2000 use alphas with dual spiders. 2000-2500 use Alphas with dual spiders and flat wind coils.
But on HW we try our best to meet the customers needs