coil overs are usually adjustable too
depends on what type & style
as long as it was a bolt in deal,
even a weld in deal isn't that tough
shouldn't be any big deal to go back to stock
depends on how much it was altered
all aftermarket suspension isn't all the exact same deal
even when coil-overs are used
some you can still even use the OE style torsionbars
different strokes for different folks
I've done it once with all Capps Automotive/now QA1 stuff,
k-frame, tubular LCA's & UCA's, swaybar & dynamic/adjustable strut rods etc.
with coil-overs & reinforced inner fenders/shock mounts,
I just left the J-bars in the inner fenders
put the org. OE k-member & org UCA's & LCA's, OE strut rods
with new hardware & new rubber bushings
back in, then sold the car
kept the $2000+ worth of better suspension parts
I just reused all the 'better stuff' on another project
that I wanted to actually handle & turn, with less understeer/push/dive
& body roll, with an actually good option of oil pan selections (more than 1-2)
& headers clearance too, also ease of replacing starter etc.