3 perfect 10.1d, with my kac-x401m

Do you think my amp has enough  power to run 3 infintiy perfect 10.1d's.  I have the kenwood mono kac x401m?

I assume you have them wired up like this?:

According to Crutchfield, the amp puts out 400 watts when it's run at a 2-ohm load, and 200 watts if it's run at a 4-ohm load.  133 watts to each sub is definitely not much at all but they will work just fine.  I think you'd be better off just pushing two subs, or getting a more powerful amplifier like the JBL BP1200.1, which puts out 1200 watts RMS @ 2 ohms.

Dam I hate when that happens, by the time I hit post essmith69 had already said the same thing that I said. And for some reason my delete button is not showing up.

I take it you have not purchased the subs yet am I correct?

No, not yet

but what if i was to buy another amp (the same one)

how would i wire 3 subs off of them both?

What kind of sound are you looking for? Something that sounds good or just something that just pounds? Maybe something in-between?  Also to answer your question if you got 3 subs and 2 amps the sound would differ between the 2 different sets. So I would not suggest that you go that route. Now if you got 2 amps and 4 subs that would work.