66 mustang 2+2 w/FRPP crate

[steemin]

FRPP 347/450hp crate installed into a 66 2+2.
TKO 600 5 speed
Any one with this comb?
What headers fit good on this motor installed in this car?
Recommendations for rear end ratio for the Ford 9"?
Opinions on expected performance?
Thanks,
Scott