Couldn't open video. Fuel pressure would be a good check to make.

 

nice day outside so i decided to take her down the block for a little ride. After i got back to the garage and let sit for 2 or 3 minutes and tried to restart its as if battery was dead or dying cranked real slow and did not start. when i put it on jumper box it started right up and ran fine. the alternator is brand new and shows charging battery is 4 days old new optima so i know that is not issue. could starter be getting hot from those big a$$ headers i got on this thing? would that make it drag real hard and not want to start?

 

Could be but also could be a bad connection or too much advance. Don't know what the engine parameters are. I'd check all the primary 12V and ground connections. Also see what the voltage does while it's cranking. Use a meter as the gauge isn't that accurate.