222rwhp! boy is my face red.

You can talk a/f ratio, intake and headers all day...and improvements in these areas will help, but the single most largest power robber in your combination is transmission related, IMO. What kind of converter are you running? Tha parasitic drag of a 727 is tremendous. I've seen almost a 70 HP difference in a 727 VS a 904 on the dyno at Mercer University in Macon, Georgia. I know a 904 would be a pretty costly swap, but there are things you can do to the 727 to help, the first thing being a a good quality converter that really transfers torque instead of wasting it.