TFS Twisted Wedge 205cc with alittle bit of work done to them. Started out of a bare casting, CNCed them, then modded them alittle bit more, and finally put the lightweight springs, valves, and Ti retainers on them. Should be good heads for a 7,400rpms shift point. Still waiting on the 3/8" studs and the stud girdle.
LSX valve springs
LSX valve springs