[Scrapla]

Adjustments allow for different rides like if you wanna bite down at the track or just cruise around the street you can loosen them up

Sub frame connectors connect the front unibody to the rear unibody to stiffen up your car, there around $40 bucks and weld them in dont bolt, just my .02

Our cars pretty much come stock with a CAI (cold air intake) but basically your engine gets more power from cooler air so drawing air from the fender area is better the drawing hot air from the engine bay.

Hope I could help