Adjustable is always better. If you lower the car and you end up with your thrust angle being off when the axle is centered...you're gonna wish they were adjustable.
2002 C5 Z51. MCS 2WNR TT2 coilovers, 18x11 Forgestars, 315's, yada yada. Built Z06 T56. Bolt ons. Coming soon to a CAM event near you.
2013 F150 6.2L. 9mpg.