It's uncalled for? He was giving you advice, you need to learn more about what's right/wrong for these cars before you just jump into them. Judging by SO many of your previous posts you don't know a whole lot about how to make a car faster. You said that you beat a GTX WITH A MALFUNCTIONING CPS, that can hurt his performance a lot. Please get over yourself.
For the LS4 swap do some searching about the motor. There isn't much of an aftermarket for them, it's much smaller than the 3800 aftermarket which is already small enough. Keep your motor and look into an L67 swap, top swap, or turbo. You will go much faster without the headache of swapping in a completely different motor.