Here is the line up of arms
1. Sprinter AE86
2. Celica RA60
3. Corona XT130
4. Sigma GH
Also shown the XT130 idle arm fits prefect into the ae86 strut!
i would say the idle arm is very similar in length
also, RA60 and AE86 lower arms are very similar length
the XT130 lower arms is only a few mm longer (give or take 2-5mm) than the ae86/ra60
and the sigma is significantly longer than all of them (give or take 2-3cm)
coming soon, cheap as ra60 strut conversion for the backyard mech!