Flat tappet to solid roller...

go with the solid roller you will have the valves open longer on both sides of max lift.
This is what I was thinking, my other argument for roller was less friction of the whole setup thus more power and I wanted non hydraulic setup.
I dont mind adjusting it from time to time and my other car also has solid flat tappet.
I am curious how much power I can gain this way say with the second .550 lift roller cam that I listed. I must check out what Isky or Lunati or Hughes has to offer.

Also have in mind that when I write "street use" it means that I go thru at least one set of tires per summer and I drive this car hard, this is not grocery getter ;-)