Sir Alex believes his current squad is better than the treble winning side of 1999.
The Manchester United manager has stated that this year, the Old Trafford outfit have greater strength in depth, and have what it takes to challenge for all major trophies this year.
"We have a stronger squad now. When we went to the (Champions League) final, Keane and Scholes were suspended but Henning Berg was the only injury," said Ferguson.
"I still had to pull in a player (Jonathan Greening) who had only played once or twice in the first-team. He got a medal for being on the bench. That gives you an idea of the strength of the squad.
"It is nice to look back on these things and think how it was done at that particular time."
If Ferguson's side are to stand a chance of replicating the remarkable treble of 99 this season, then the Old Trafford outfit must retain their focus ahead of the decisive stage of the season - a point Ferguson is keen to reinforce.
"But the reality is that we should not get carried away, particularly in the FA Cup when anything can happen," Ferguson added.
"You don't want to get a shock. In many people's eyes Monday would be, 'yes, it's Reading, we have just been to Madrid, it was a great night, Monday will take care of itself'.
"Monday can't take care of itself. We have to take care of that.
"We must get a performance off the players that respects our opponents and also the fact the FA Cup can produce shocks."
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