[jhein]

I don't know. The extra cost for a HR vs HFT is probably about $1500 more for the cam, lifters, rockers and valley pan. If you have a HFT failure and you're able to identify that before the motor is in the car that will still cost you more than $1500. Way, way more than that if it's back in the car. And, sure, if you do all the work yourself, it won't be as much money but a lot of extra work. And, if you did a HFT and let's say it failed during break in, would you feel comfortable, redoing it with another HFT, or would you be more likely to go HR? All of those factors are probably why Butler and other builders won't do HFTs anymore.