The multi link swap is not possible without unrealistic cost and time.
That said; you can get plenty of performance from what you have. They have been winning races for 20+ years and there are proven ways to make the car perform. Feel wise, many people, including me, prefer the E30s the way they are.
Steve, VAC Motorsports
Sales@vacmotorsports.com
Toll Free Order Line: 866.714.2002