Will Two Male Pitbulls Get Along?

To be on the safe side I would get the younger one castrated as soon as possible, then he will be less likely to challenge the older one, and the older one will be less likely to see him as a threat.  A greater chance for peace and tranquility all round.

If you are introducing a full grown male to another full grown male, then yes there will be tension between them until one establishes his dominance over the other. This is completely normal though. Would I bring in a full grown male into a house with an established alpha male, no...!! But if you do , make sure you separate them before you feed them or you will definately have problems...!!!

It depends if your dogs was raised around other dogs , my male is a champion bloodline breeder hes a red nose n because he is a lover  he gets along with all dogs as long as hes not around his female.but 9xs out of 10 they will fight .unless they was raised around each other

The older will put the younger in his place so keep an eye on them. Its natural. Don't keep them seperated as this will definately create tension between them. Let nature take its coarse. I'd be more concerned if they were closer to the same age. The younger one will not take on the older for leader of the pack. He'll try once in a while but like my kids did growing up, you show'em it ain't time yet and things go back to normal.

We are talking pitbulls here! They will get into a spat, and it can and will turn very nasty, very soon.

Not anytime soon. At first you might feel that they seem to be getting along really well, but once the little one matures, shit might hit the ceiling before you can say the word. So you may want to consider keeping em separate unless supervised closely.

Will two professional (male) mma fighters get along? Sure ... For a while... They need a strong pack leader ... And they need to be fixed. Never leave them unsupervised. If you go out be sure to crate one... Then all will be fine...