My classic understeers a fair bit, and I want some handling mods for use on the track.
I was gonna go for (whiteline stuff) rear ARB, rear solid drop links, and 25mm drop in springs
Is it just the rear ARB that needs changing (ie wud it understeer more if i changed the front one too) then a goemetry set up(garage).

Are all of these easy enough to fit with normal basic tools, jack and axle stands???

 

Rear bar, drop links and solid ARB supports + geometry should be your first task. All but the geometry you can do yourself.