Just comp tested my car here is the result 9:1 pistons:

1: 180
2: 175
3:180
4:182

are these numbers ok? The plugs looked insanely rich (black on ground strap, black on ceramic below electrode, black on base) but i just want to know if these results seem ok- cyl #2 has me a lil worried seems kinda low.... tried cranking it more and couldnt get it over 175

 

looks perfect! They're all not that far off from each other which is all that matters

 

Pretty close to mine, i have ls/vtec B18B block stock pistons (9.2:1) and slightly milled head. so yeah you good mang. i range from 180-195.