Hey Questers,   What do you replace the attenna with and where would I get it?

Hey all , I want to run a system off my factory stereo ( this thing is just to cool to replace) i have a 6 disc on it now but i want to run a sub, how to I wire  the pre outs, I bought a "speaker level converter" wich says it"matches car stereo output to amp input"  but for one it has vehicle specific instructions , of course no quest or even close, and second this thing just looks to comlpicated to do a simple chore, you have to run about every wire in and out of it, I thought it would be a sim

Since we don't have a projects forum this seemed like the best place to put this. Here's what I've done or am going to be doing to my 88 ESI-R:   Punching block out to a 3.0 liter with all new pistons, and evreything that goes in block, Caravan head ported and polished, Baker 294 cam, Mitsu Fuso Truck IC, SFP Header, Stedebani Short Throw, Jet chipped 89 ECU(temp solution until SDS is in) SDS computer setup for distributorless crank trigger ignition(already have), MSD DIS-2 PN 6212 digital cd i

My factory rears are blown and doors aren't far behind so they are being replaced with something nicer Polk MOMO 465 (6.5 inch) components in hatch, and the Polk MOMO 455 (5.25's) in the doors. That's it don't want a crap load of weight. Peace   Rick Tross