You would actually be better off with 1 7/8" headers, but might have to run spacer plates because most of them have a stahl patern. I run hookers on my 377" and befroe that a 406" with alcohol i have track1's which is not as good as your heads. But i may be spinning my motor tighter than you are, with a 5.43 gear with a PG. The car will run 6.50's @ 3250 lbs.
JMO
Zip.