but their old good equipment is really starting to get old enough to where a lot of it is breaking down

It'* still a fosgate, yes it'* good, but if you're buying it used, you can get some good stuff used, you can also see what some people are selling here....

8 tweeters will cause a lot of sound field crossing, and ruin imaging. Screw tweeters in the rear, they do the same. But that'* my SQ side.....

I agree, Too many tweeters. Is there some reasoning to your madness?
The older RF amps are ok, My buddy bought one for 50 knowing that it was blown. Me sent it to RF and they fixed it no charge.

with all the stuff your adding on id be considering a new 160 or 200 amp Alt. Possibly through DP..

I am getting a battery cap. Do I still need a new altenator evern though I just bought it in July?

How many amps is the one you bought, 160?

You actually pull more current overall. You have to "fill" the cap first, and then all the normal drains in the system are still run thru it. They are just spread out, and flatter, not as peaky. IMO it'* a bandaid for an improper electrical system. If you got a new alt, and it put out it'* rating, the cap will only make your headlights stay 100% @ idle.