this may be a stupid question but......

I have a 12 valve cummins thats going in my 05 v10 superduty.before i start my swap i got the motor without the fuel pump(p-pump is missing).my question is if I buy an airdog or airdog 2 system will I have to still by the p-pump to complete my swap?im a total novice when it comes to these systems and how they work but from my understanding they replace the factory p-pump ao I wouldnt need it.if this is true which model should I get,the one for a powerstroke or the one for the 12 valve?I read that the airdog 2 hooks up to the factory fuel line so i wouldnt need the draw straw.also how do i delete the old v10 fuel pump just pull it out?if i do will my stock filler gauge still work?