Wondering if anyone had any advice to help me with my problem. My Camaro was Vandalized a few months ago and since I have fixed everything so far. The only problem that I have left is that the car cranks for an extended time before the engine turns over. I've tried everything that I can think of to fix it and no luck. I've replaced the MAP sensor and Throttle Body Pos. Sensor. Advice?

It sounds like the fuel pump is bleeding down.
Test this with a fuel pressure gauge. The system should hold residual pressure for quite a while, even overnight.