Desktop dyno.............

My engine is pretty mild but I keep wondering, what if I change the heads and cam. I have the J heads on a 340 + .030 with SS 2.02/1.60's with stock ports but 5 angle valve job. It has 9.7 comp. with the Racer Brown SSH-25 cam. That is .485 lift, 108 lobe separation with intake at 105 and exhaust at 111. Haven't weighed the car but it's a 69 Dart and I'm hoping for 3300lbs.
As you can see, this is not a race engine and I would like to upgrade heads and cam. I'm going to run the LD-340 intake and Hookers. Also using an 800 Thermoquad from DemonSizzler.
After talking to Billy, CudaChick's other half, I may forgo the power brakes due to worries about vacuum.