Bullshit, all you need in an S13 is a set of coils, a mech diff and a race seat and you can bust fat skids all day long if you know how to steer. F*ck look at my shit heap, it's got half assed sus and a stock viscous diff and I can still chuck it around in 3rd and link shit.
If you're spending bulk cash on an S13 and still having trouble you need more practice