I've run Alpine Type-R Components(also rated at 90W RMS) off the front of this amp with the rear hooked up to Type-R Coxials. I had to turn the gains up a little higher than I would have preferred, but it sounded good and has not had any problems since installed about 3 months ago. I have also run the Type-R components brigdged off this amp, and it sounded amazing with the gains at low volumes.
I also used to work with Infinity at a different shop, and have run the Reference 6010CS Components off of deck power when customers did not want to pay the extra $ for an amp. They worked, and rarely had problems, but didn't sound the best. But of course that's running off of 16-18W RMS, and you are looking at giving them 40W RMS.
Personally, I am not a big fan of the newer Infinity components(6010CS, Kappa 60.7CS), you can get much better speakers for the money. I would take a strong look at the Alpine SPR-17S component set.
My best suggestion would be to either upgrade to some different speakers or deal with having different looking amps.
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