2011 Subaru outback dual alternator question

Hey guys I am going to be installing a second HO alternator in my engine bay. I already have a DC POWER 270amp 14.9 volt. The second is a BOSCH HO 280 amp that is rated at 14.7 volts. 

My question is this. If I wire both alts in parallel will the two unmatched outputs cause issues? If so what would they be with only .2 volts difference? And finally. How can I best avoid issues while still utilizing these alts as efficiently as possible.

Thanks in advance!