Ok so my 2010 800s which is turbocharged,recently the engine was damaged completely (top end) I’m talking head,cylinder,pistons,valves I don’t know what caused that but I’m sure something has I entered the engine from the header or intake anyways that’s the past so now I need to rebuild it so what I need is the best Bigbore that would give me the best power and that would work great with my turbo (gt1544) as I said I’m looking for the best power something that is strong as hall but at the same time I don’t want something that would damage my engine again

Any help/ideas/suggestions would be greatly appreciated