calebbo

The goal is 220WHP

This is what I bought:
Turbo, Elbow, Coolant lines (Rebuilt SR T25)
Turbo Manifold (ISR V2)
FMIC Kit(CX Racing)
3" Exhaust (HKS Hi Power)
550cc Injectors (Deatschwerks)
Enthalpy Tune
Z32 Maf (N62)
BOV (HKS)
Headgasket (Felpro)
ARP Head Studs
Spark Plugs
Oil Feed/Oil Drain Lines
Glow Shift Gauges (Boost, Water Temp, Oil Pressure, Wideband)

Timing Chain Kit Install by shop (Includes *)
* Front Main Seal
* Tapped Oil Pan
* Oil Pump

My question is pertaining to the head.

When I swap out my head studs to ARP and change the gasket to a felpro, should I go ahead and swap out the valve stem seals?

I also have 200PSI compression on all 4 cylinders on a warm engine. Wide open throttle. 4 engine cranks. MATCO compression tester.

I assume this is carbon buildup since max is supposed to be 179-180PSI. So should I set the pistons to TDC and scrape off the carbon on the pistons while the head is off?

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1991 S13 w/ rebuilt KA and Trans