I have the valvesprings and retainers to support the s2s2 cams I have in there now, including upgraded lost motion assembly. I have a obd0 b16a stock compression, cam gears, fpr, vafc. Should I opt for the pr3 cams instead due to the stock compression of the motor?

 

From what I have heard, S2S2 cams like high compression - 11:1 and higher. So they would not be the best choice for a stock B16A, which only has 10.2:1. If you don't ever plan to increase compression, you can either go stock, or go with the S2S1.