^ em you realize springs are around $200 or less and coilovers are $1300ish. Not budget friendly for a lot of guys and he may not be wanting to go that low and adj control arms are another $500 or so. It's a Grand Prix it won't handle like a Subaru.
Spacers..depends on what your attempting to achieve. I have no problem with a minor spacer to give your wheels a bit more poke but only recommend it if your lowering it. Are you wanting to do it on stock wheels? How much of a spacer are you thinking?
There's a great thread on spacers in the suspension section.
Bewildering how these sections are continually missed for some inexplicable reason!
lolz...
Overkill BBC Cam, YT 1.8 RR's, Rhodes Lifters, STGII Heads, GenV, Pacesetters, 3" Exh to Tips, TEP Trans. N*, ID 75# injectors/E85 coming soon