I have a 69 malibu with a 307. Is there a way I can build this motor to make it fast and durable at the same time? Will I need a new crank, new heads, borred block, what cam do I use? These questions and more. A machinist told me that I can use 327 stuff, I'm new at this but am willing to learn and ready to get started. Or should I just build a 350? Will someone that honestly knows what they're talking about please help!! THANKS.