The TSP Brawler Heads! I've actually been eyeing those myself; They look so nice brand new and clean!
What year and model Corvette you working on?
I've had this 98 C5 for over 10 years and it's just over 79k miles now. I moved on to many other cars and projects because I was never sure how to build it without ruining it but I figured it out now. It's going to stay a street car but be capable of drifting as a backup/every-once-in-a-while car which conveniently leaves it with a fully adjustable suspension perfect for any other type of racing as well.
So far even with an extremely conservative version of my previous tune it is VERY healthy. I finished putting it "together" (I have a extension socket sealing a couple of holes and my driver side coil packs are zip tied to the valve cover, etc) and then let it idle and cycle the fans a few times and then raced across town with it to get it to the body shop a day late and just in time so I haven't had a chance to actually tune it. I can say the heads were very nice and inspecting their work on the springs and valve everything looked consistent and exactly what I would want to see.
I was at my friends' shop who developed the 10 speed swap with PSS and while I was there I was helping with the 8 speed C6 he just put together and then this absolute slag of a C5 6mt vert he got for $3500. The TBSS in the background is also a 10 speed swap and I think he wants to sell it for space. The GMT800 janky truck in the background is also a 10 speed swap and feels incredible. It's a very busy and random place to be but never dull.
Oh and to be relevant to the thread I totally WILL use the Denali to go pick up my old 241 perimeter bolt worthless heads at his shop later today when I am less lazy.