I've used automotive Machine for having repairs done on my PI heads. They're on Garfield just north of Utica where it splits off.
1996 T-bird, 4.6 with ported PI heads and VT stage 2 cams, JBA shorty headers, 3000 stall converter, 3.73 gears and just about every bolt on available.
Dyno tune results: 275.9rwhp and 301.4 torque.
Best 1/4 mile time: 13.65 at 99.52 mph.
Now I need more gear, more stall and some drag radials !!