how to keep it straight @ 150+ mph

[MakotoS13]

okay so i'm lookin for high speed stability. the S13 isn't long or wide enough. these are problems. we can add a few inches to the width of the car but the wheelbase is pretty tricky to jack with.

i'm hoping that positive caster will make the car significantly more stable at speed, have any of you guys tinkered with this much? i'm gonna have to get some more parts from SPL

mods:

KTS coilovers
SPL RUCA
SPL tie rod ends/Z32 inners
energy suspensions poly bushings all throughout

also, i've discussed this with a few S13 owners and my suspension is so stiff that sometimes on certain bridges it "bounces" or "bucks" due to the wavelike design that the segments of the bridge form. at the dang speed limit its like i'm in a saturn5 rocket. i dont think there is much we can do about this short of getting better spring setups (silkroad/whatever).

i figure that once i get more caster, wider wheels/tires, and the weight of the V8 up front it should correct a lot of these issues or at least help.

discuss.