J……. Between the $900 - 596 heads, the cost of the super cheap Black Friday sale Speedmaster heads @ $800 and what ever work went into them that I’m sure you did rather than pay someone, I think you were and still are being short sighted on a TF or W2 head and what the real cost is of the head. The draw back to the W2 is specific intake and exhaust headers. But then again, you get what you pay for.