Pinasco 102ccm

Hello, guys. Maybe some one can help me with that question? I bought pinasco 102ccm aluminium cylinder but it came without piston pin bearing. Original crankshaft (as it is in my situation) have bearing 12x17x13dimensions. Before I had malossi 115 cylinder which came with piston pin bearing included in the kit of 12x17x16. What dimensions piston pin bearing should I purchase for my pinasco 102 cylinder? Should I use original size bearing or I need something different?