My car will idle perfectly, but after it warms up and I step on the gas, it will totally bog down and die. I cannot drive it anywhere. I have replaced the distributor, plugs, & fuel filter. The engine vacuum is 19. We have checked the timing and fuel pressure. Are there 2 fuel filters? We have spark, but cannot rev the engine, it dies.

What is the problem? This is driving us crazy. Help.
Thank you.