dis-assembled one head to get some requested specs. giudes are very good, valves in nice shape. high compression springs with titanium retainers. valve grind appears recent and is clean. intake port is 40mm at the opening, tapering to 35mm at the bottom of the throat, beautifully done.
I did some figuring, just to buy the valves, springs, retainers, etc. would be over $1500. add to that the cost of porting, machining for twin plug, guide install, and a valve grind. PLUS the cost of a set of good core original turbo heads. and you're way more than double this price.
