Sorry I'm a little late!
But.......since nobody has replied....

About 310hp/330tq to the tires. Hp would be higher with headers.
1/4 mile: Mid 13 @ 108 .....lots of uncertainty here, not knowing what your race weight is. Too bad you're running street tires. Some DR's could bring that prediction down to a Mid 12 @ 109-110.

Go here to see what B-bodies have done with various mods:
Dynamic Top ETs=
You can sort by any of the heading/column titles.

 

Unfortunately he has not been on the forum since Nov. 2014.