If Saitama from One Punch Man trained like Goku, would he be stronger?

Saitama is the main protagonist of the series and the titular One-Punch Man. He is the most powerful being to exist in the series. Saitama faces a self-imposed existential crisis, as he is now too powerful to gain any thrill from battle. In the series, we discover that Saitama has broken his limiters (which limits how powerful one can get). Even the mightiest foes pose no challenge to him, so he does not take his hero work seriously, goes through everything with little to no effort, and yearns for an opponent that can provide him with a challenge. And due to this reason, Saitama doesn't need to train from this point on. but would it be possible for the invincible Saitama to become stronger than what he is now (Although many say he has limitless power). What If Saitama from One Punch Man trained like Goku, would he be stronger? 

It's the one lingering question that everyone is thinking about but has remained unanswered. Saitama trained hard for three years,  he became powerful like hell. Saitama even jumped from moon to earth like it was no big of a deal. but still, We don't have any answer about the power level of Saitama. Simple training won't work out even if Saitama tried to train he shall have to combine two hills and then use it as a dumbbell to work out. We have no real estimate of how powerful Saitama is yet. But, during fight with the strongest creature in the universe (Boros) Saitama use a maxed-out punch to counter Boros Star Roaring Cannon which pretty much obliterates Boros.

Additionally, the punch parts clouds across the globe for thousands of miles. And from the cannon he literally takes zero damage from opponents, not a single enemy has been able to scratch him. So the normal training that we do on the earth won't be effective for him. He could become strong if he trains like Goku. because from the Dragon ball franchise we know that Goku is indeed one of the strongest characters because of his hardcore training every time he pushes himself to get stronger. Until the author rivals Saitama's true power level, seeing the punches of Saitama Goku is totally powerful than him by a long shot. As Goku breaks his limits, again and again, to get stronger and stronger, the same thing could be possible for Saitama, but unlike Goku, Saitama doesn't have any worthy opponents or a rival to challenge. Saitama would have to make do with hardcore strength training exercises.

What do you think will happen in this situation, If there is something that I might have missed or made mistake feel to comment down below. What are your takes on it?

PS : This is just a fan theory, It not real facts so this might be subject to change if Saitama's power increase in further episodes