run 2 ohm speakers off of my head unit

I was wondering if i could run 2 ohm speakers off of my HU. The HU is a Pioneer DEH-P3600. A friend offered to sell me some infinity kappa 2-ways for 50 bucks a pair and i was just wondering if they would work with my HU or should i get an amp.

From the manual itself page 40 on

http://www.pioneerelectronics.com/pio/pe/images/portal/cit_11221/50395826OPERATION%20MANUAL%20DEH-P3600.pdf

load impendance......4-ohm(4-8ohm[2-ohm for 1 ch] allowable)

takes 2 seconds to register.

From what it says your better off getting an amp to run it seperately.

No.

nG