No, DIN 65 wont fit. Use DIn 55 or DIN 66 It looks cheap. Yes you can go ahead with 60 AH battery. No issues. Make sure its a DIN model, if not the battery connectors might be tall and may protrude higher than the stock battery. I didnt find any BOSCH batteries in Chennai. So i just replaced my DIN 50 - 50 AH exide OEM battery with DIN 66 - 60 AH Amaron flo battery with 24+24 months warranty in Chennai. And yes, you can fit 65 AH Amaron black, but the connectors will protrude.