all my engine run stock boost . i have never raised boost on anything ....i nver owned a boost controller in my life

..so my engines are safe ....
a 300zx weighs 1585 kg (3494 lb)
1966 Valiant V8 specs 180 hp(134) and 260 lbf·ft
300ZX VG30DETT 280 hp and 283 ft.lbf