If you play around building cars on the dodge site, it will let you estimate your monthly payment, although I think it leaves off tax. Here's a generic one I googled up real quick:
http://www.bankrate.com/calculators/...alculator.aspx
That lets you play with all the parameters and see how change in interest rate/down payment/term will affect the monthly payment.
Glad to hear business is good!
I saw a plum crazy go by on a carrier truck a few weeks back. I imagine you can find some right now, but probably scarce to none if you wait very long.