Anybody run Trick Flow GenX LT1 Heads?

[beertestr]

I was poking around, looking for alternatives to CNC porting factory LT1 heads, and saw these. Some of the flow numbers I have seen look good (255 cfm at 0.500) for an as-cast head, but really, that's about the same as stock LT4 heads... which are getting hard to find for a decent price as well.

Anybody run them? Impressions?

 

[Sean]

I can get the ET program that flowed around 280cfm at 600 on stock castings.