Sounds like it will be a fun little machine. Here is a duster we freshed up. Used to have two 750's on a tunnel ram. It took quite a bit of convincing to get the customer to ditch the tunnel ram and go to a single 4, but once we did, it sure came alive!

562rwhp @ 7000rpm corrected if I remember correctly.

Dyno run...

http://www.youtube.com/watch?v=7TJA2ScKlig

First pass off the trailer in 4000ish feet of air.

http://www.youtube.com/watch?v=jxaOtKWZU4Q&feature=related

I believe he did get it into the 10.70's later that day. Now, with some SERIOUS Chassis tuning I expect it to go a bunch quicker yet!

-Kenny