I'm pretty sure Pat means the Power Plant Frame. Mine got slightly
buggered when I unavoidably straddled a Falling Rock, but not enough to
merit replacement. (The major damage was a broken differential case.)

It is a part on every miata from 1989-1997, I am not sure about the M2.
It is that long aluminum piece with holes that runs the length of the
car from the transmission to the rear end, about 4 feet long or so.
I forgot what you call it, the differential housing attaches to it with
two bolts.

That's not nice. :-) I have sold over $2,300 of Lego-related gear in the
last month. That is over 100 sales, which doesn't sound too impressive
except that I am doing this completely alone.
I love Lego people....There is still a box to go that I can barely pick up.

Oh yeah, ware-hawking time, even on-topic. I have been spending too much
time on the Lego stuff to concentrate on miata parts, but I did get the
1990-1997 Koni shocks/struts/tower assemblies listed. I am starting them
at $200.00 since I have a friend who will pay me nearly that much for
them if they don't sell.

http://tinyurl.com/jjmgb

I will also be putting up an excellent set of 15" OEM alloy wheels with
no tires, one at a time if anyone needs a replacement or two, along with
a 1.8 liter coil this week.

Actually, aluminum is at a high price right now, especially if it is
clean and not cans.
Someone gave me 4 wheels from a 1990's BMW 3 series. They had tried to
mount two of them on a Jeep! When they didn't fit, they literally ground
the centers out, unevenly if that even matters. How could that plan fail?
Anyway, 2 look good to sell and I am running the other two up the the
recycling center with some cans. That support piece from the miata is
fairly heavy and solid aluminum, so I figured I would throw it on the
pile if it has no other value now.

Damned Houstonites..... ;-)

Pat