Trick flow heads how are they ?

I have three sets. Very nice heads.
Two cars are waiting to make first passes on them.
First set are on a 394 with a flat tappet cam in my Dakota.
Second set are on a 408 with a roller cam in my Valiant wagon.
Third set are on a 360 with flat tappet cam sitting on the engine stand.
Just waiting for tracks to open.
Only report I have for now is both engines sound good and feel good driving around the neighborhood.