Air suspension has come a really long way in the last few years. The biggest improvements are in shock absorber technology, unsprung weight and digital leveling. In fact, at this point, the two springing mediums (air spring vs coil spring) are interchangeable -- at least with respect to RideTech products.
Shock absorbers are able to effectively dampen air springs better than ever before. Another big improvement, RideTech air springs are now made with composite caps to reduce unsprung weight. The last and biggest gain is digital leveling. Our RidePro-X system essentially sets your car's spring rates and cross weight every time you turn the ignition key. So your springs are dialed in whether you are driving alone or with the entire family plus a load of gear.
Air suspension costs more and involves more components, but you get additional versatility. It's up to you. Both formats work great.
Links:
67-69 Camaro Coilover System:
https://www.ridetech.com/application...ilover-system/
67-69 Camaro ShockWave System:
https://www.ridetech.com/products/su...ension-system/