I have these KYBs on my 69 and they're great. Very stock type ride.
https://www.summitracing.com/parts/k...t/model/camaro
I have these Bilsteins on my 68 and I prefer the sportier ride. They're a bit stiffer and may be difficult to make appear stock.
https://www.summitracing.com/parts/b...t/model/camaro