I wouldn't even push 7K rpms boosted. It's not just the valvetrain, it's the Rods. The stresses on stock rods, under boost, are approximately 30% more at 3000rpms, even with double the HP. At 6000rpms, though, the stress are multipled so it's not double the stress it's like tripled or more.

That's why I like turbo's cause you get all the boost down low, in my setup anyway, where the rods can handle the stress easier, but the JRSC only gives full boost up high where the stresses are much higher. On the upside, I hear it can be easier to tune a SC since the main power is in the upper RPMs so timing and fuel is easier to dial in right.

2000 Rio Red I4 Cougar 200whp & 210wtq at 9psi 254whp & 276wtq with NX 35shot WRX TD04 Turbo, Cut Short Shifter, Strut Tower Bar, 17" ZN Wheels, Roush Springs, Starion Intercooler, NX 35 shot, HKS SS BOV, Full 3" exhaust,StreetFlight Chip