My home inspection of Speedmaster heads

Not quite the same. The bare are $1650 and the loaded Shockers are listed at $1950 for the FT versions, $2100 for the roller. That CNC SM head is currently flowing about the same as the MAXX ($1130 bare, $1430 FT, and $1570 Roller) than the Shocker. More significantly, they have been out of stock since the summer and won't be in stock until February or so. You'll still need the B3 kit with the ProMaxx and that gets them into solid TF territory. I have a lightly used set of the Maxx 171's and the PRW rockers hit the springs and need to go up and back. They are very nice looking to my inexperienced eye though. I'm going to run them as is after I check the guides and valve sealing.

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Pretty much word for word what I was going to say. If you plan to do any kind of work to either the promaxx or sm heads, I don't see any advantage to not buying the TFs instead.

Trick Flow, in my opinion, really nailed it on quality of work and parts for the price. Someone has to be the guinea pig in these situations, and I'm not sore about it being me in this situation, but I without a doubt would have gone TF if I had the numbers in front of me on Black Friday.