i was wondering if i could use the stock head gasket with the je .20 over pistons?

HRC Stage 2 w/FMIC,Greddy Evo exhaust,Magneacor 8.5mm wires,NGK BKR7E-11 plugs, Apexi Turbo Timer, Howell Bottom End, B&M Short Shifter, Energy Suspension Shifter Bushings and Motor Mounts, Datalogger, Autometer A/F, FP, Boost, EGT Gauges, MSD Ignition C

Yes you can.

Matt
1995 Eclipse GS
2.0L, S16g Turbo, 8 Injectors, 26psi

1998 Eclipse GSX
2.3L Stroker, AEM EMS Converted to Speed Density, FP3065 Turbo, 35psi , and so on...