The sound coming from the bottom end was not good. Driving home tonight I could no longer talk myself into believing this was not going to end without a mess. But I did find a turn out. Before it went poof.
The last time I found myself on the side of the road calling AAA for a similar rumble it was from our RV. No vented block but that feeling of, this is not going to end with out the spending of cash that I really did not want to part with. But I am grateful it is back on the road. Once again I will be going down the path of justifying a motor, stock, but one that gets 27-33 MPG.
So, what to do next.
On the bright side I will have a fresh clutch, water pump and belts.
The RX7 5th gear swap is a great upgrade to do while you have the engine/tranny out. You get to keep the Mazda zoom zoom in 1st through 4th and save a dime or two in fifth.
Here is a step by step writeup.
http://forum.miata.net/vb/showthread.php?t=441727&page=2
Looks like the shop that has faithfully changed and checked/topped the oil of my cars going on 8 years over filled the car by what looks like one and half quarts.
Now what?
Yes, drain and refill.
I am hopping so, I do not want to vent the block.
In reply to jr02518:
Change your own oil from now on? 
Having a shop receipt with the milage is something the IRS understands. I average 3500 miles every 6 weeks, over three cars. I got tired of convincing the "Auto Zone" that I was not a shop.
