Amps probably stuffed, might be a blown capacitor or three. So weird with that wiring setup, I'm surprised it worked haha.
Just get a Class D or mono amp (rated higher than the RMS of the subs, check impedance), save yourself the hassle.
I was having thoughts of selling my Skyline... then I moved it out of the garage. I'll keep it
One day I'll take it to Wakefield, and EC South (gotta beat that 1:03 time hehe)
To be fair mine is a FWD hatch that I share with my mum. I wouldn't track it haha. But the point is you get into a modern performance car and drive instead of fixing 30 years old stuff. Especially now that 90's JDM cars and parts have shot up dramatically.