[DonC]

CB:
Give the engine a bit to settle in. Joe's HP numbers tend to be on the conservative side.
The 3310 carb is a 4160 (vacume secondaries and center hung float boles) and they're still available from places like Summit. I doubt it is a rebuilt unit but it could be.
When I first spoke to Joe about building my 428 I too told him I wanted 500 at the fly wheel but I also wanted 100,000 miles out of the engine before I would need to do any significant rebuilding. His response was that without adding thousands to the build price that would not be likely. He could have just as easily said yes and billed me as appropriate. I appreciated his candor and told him to go with his best shot at longivity and let the HP fall where it may. His HP numbers came in around 435 with the water pump and mufflers which would be around 450 running without those components attached which is how a lot of the numbers you see are generated.
The Scat crank and rods pretty much bullet proof the bottom end and the rest fall into the "middle of the road" for build components.
As you think about changing or adding bits and pieces keep in mind the HP to longivety balance and go with whatever you think you'll be happy with.
The iginition is in all probablity and MSD 6AL. That's what he uses as standard. MSD distributor as well.
What you use for driveline components will be a big factor in what you get for street performance. In my case a TKO600, 3.07 rear end gearing and 17" wheels and tires will allow me to break the back end loose in 1st or 2nd with snapping the throttle. More than enough for street performance for me. Haven't had a chance yet to put it on the strip of track. That will come this summer (for us in Oregon about 2 weeks in the middle of August). When I get the chance to run it in those venues I'll post with the results.
DonC