AFR Heads

NC Engine Builder said
And the W2 was designed around 1974, and intended for 340-355 cubic inches. Definitely not a "big" head. A Indy 360-1 would be the next step up

I'd step from the Trick Flow up to the 360-1.
Hell, it's a small block I 'd just skip the Trick Flow if I wanted to make real HP.
We can make 500- 600 Hp falling off a log with our big blocks.