I'm building a turbo busa and don't know what pistons to go with. One brand has a compression ratio of 9:5:1 and the other 8:7:1. I've been told that the lowest is the best for turbo applications but, all the treads I read have the 9:5:1 pistons in them. I want my hp to be between 250-300 but not sure which piston to choose. Also does anyone know how much hp can the crank handle? Can't seem to find it on the internet