Tim with the Kicker 2 and said RP's what tire size are you running? More importantly, what are you doing to protect the body? That sounds like a great build up...
I'm planning on running 35"s, which will be pushing it in the ratio department, since stock is 28"s and 4.88s. If it's anemic at hi-way speeds, Bob and I have a backup plan. Run a belt driven low boost S/C off the 2.5L Toy Previa. But that is a issue of "crossing the Rubicon" in its historical meaning. Once we start hacking and fabbing that in, there's no going back.
As for body protection, I figured I'd just yell at her when she's starting to get fuct up.
Always worked before. Actually, come to remember, it usually ended with her crying, getting out of the truck, telling me to drive it, and then her slipping and falling on a rock.
I was thinking of LA and coil-overs, ala Okie Zuk, but I'm thinking S/R YJs with a trac-bar might be simplier and better suited to her needs.
Maybe some moderate rock protection is in order? LOL