Uprated suspension?

[ov_lozza]

I have decided i cant progress any further with my drifting until i sort my suspension, i would like to know what uprated suspension have you fitted to your car to make it stiffer?

Are coilovers or shocks and springs available from companies? And if so, what companies?

If theyre not available from companies anymore then how to make s13 suspension fit?

I'm not looking to buy yet, as i have no money but would like to know how much im going to need!! Thank you in advance!