Nope, no problem whatsoever. The results will be fantastic. You'll be amazed by the difference in the quality. Just make sure that you do not go for comps having RMS wattage of like 100+Watts. Comps like Infinity Kappa won't be VFM for OEM HU as OEM HU is just 30x4W. Refer to some brands used by Sathya_sc, Johnny and Karan_Sharma. Read what they say. All of them are satisfied with the results. I have fitted JBL GTO608 comps in the front and JVC 4-way co-axials at the back. Only thing is that now there are a lot of rattles as a result of poor job by the installer.