The answer is easy, they fit like a champ after Ryan elongated the pushrod slot because I have a 48* R block with my W5's on it. This is great cause you never no when you might want to throw some W9's on.
Because you always want to go faster
Here in lies the core problem. P5007065ab cnc chamber W9's can be had for under $1,000 for the pair, need about the same finish work, and yes, they need some $$ headers, but cheaper than TTI's? That being said, I could see a pair for a low buck valve train, low conversion labor deal.
