Not real sure what you mean by modernize the suspension, could you clarify what you mean by that?
Sounds like your good with the stock suspension, nothing wrong with that!
Modernized means KPI angles, camber curve, caster degree, scrub radius, and bump steer being optimized for control, handling, and braking....something the stock E and B bodies are seriously lacking, despite how fast you can drive to grandma's house.
