I would think cutting them, at least 3 angle valve job, check guides. I say "check guides" because this was a motor home engine with low miles. New springs/stainless valves. I'm pretty sure for the cost, I will end up liking the weight difference and flow difference with one of the low end new aluminum sets. And is really what I had in mind, and the purpose of the thread. To see if there is truly a clear winner of the 3 brands. I came into this thinking Promaxx, but my mind is open (just not to TF LOL :D)
