69 dodge dart questions

ok, so i have a 69 dart i bough about a year ago.
the build is as follows.

1969 dodge dart
-ENGINE
1968 440 hp
10-1 comp
stock 906 heads w/mopar performance springs
509 lift cam
fenderwell headers
holley 750
holley elect fuel pump
holley street dominator intake
msd 6a ignition
msd billit distributer
ss blaster coil
high volume oil pan/pump
-TRANS
727
reverse manuel valve body
3000 stall
-REAREND
8-3/4
3.91 w/suregrip
-BODY
Shaved fenderwells
hemi hood scoop
centerline rims/mickey thomsons
-SUSPENSION
super stock springs
koni adjustable shocks in rear
comp 90-10 adjustables up front

what should this set up run?
est horsepower?

Your setup is almost identicle to mine other than fenderwell headers.I only
have 1/8 mile time,8.40s bad air no traction in street trim.Is your dart
tubbed?All i had for tire was a 245/60R15 radial t/a.

This same engine came out of dads race car back in the 80s,was running
7.50s in a 3400lb car 5.13 gear w/thermoquad.Not real specific but maybe
give you an idea.

if the compression is accurate and its tuned properly and it hooks it will go easy 12's may dip into the 11's. but its really hard to say because i've seen cars that should run 12's actually run 14's and cars that should run 14's run 12's. get it to the track and see what it does.

im going to start building it now like cage...mini tub fuel celll and so on..
but i was wondering what class i need to go for? \
i though super stock but then people on another site were saying no way.
they said maby modified stock?