hello guys, i just bought a corrado! the only thing is im prett sure it need a overhaul on afew items, super charger and cylinderhead. i mention the cylinder head is because it is extreamly loud, like valve chatter or worn lifters and the motor has 180kms on it, ive been told the super chargers run out around 50 000kms.... i was wondering about different cylinder heads like a 2.0 aba or something, is that possible and somewhat acheivable? any advice would be greatly appreciated.