Hi mates, I am interested about how hard is to replace my engine with 125cc?I read forum member that upgrade to 150cc, but I am interested in 125cc option....is it easy more than 150cc...and if some of you have some other advice about easiest swap of bigger engine into lx frame,and which 125cc is good choise except LX125...I am not interested to sell lx50 and buy new one