rear upper control arms
 

do stock rules allow for any adjustability of upper control arms??

Re: rear upper control arms
 

From 2010 NHRA rulebook. "...Cars with rear coil springs may relocate the upper control arm at rear-end attachment point. Rear trailing arms may be replaced with NHRA-accepted OEM-type aftermarket units. Aftermarket lower unit must be non-adjustable and have bushed ends (no heims). Aftermarket upper unit may be adjustable and use heim ends instead of bushings..."