Old one blew up, Lets build new one. 77 TPR?

[mk2rox]

My old 7airsal aerox blew up, all in the same time, my crank's lower bearing broke, my crank bearings broke down and a piece cracked off my crank and it caused to the cylinder to seize. 

Has anyone built 77 TPR alu, i really what exhaust and parts i should get for it? Please help!