In my introduction I ended with cracks on the manifold and the turbo. In fact of the costs of a new turbo I want to save it.
Otherwise the manifold was not needed, more later. All guys from RX7club assert me that this "small" cracks won´t make trouble untill they are so big that they leak - crazy thing and crazy guys - love them
In the beginning of 2012 I take the car to another friend who has a crane in his garage. I welded some bars between the A-pillar and the point where the B-pillar normally is. So I could go trough the body with some crane belts and lift the body from the chassis.
Then I blasted the chassis with all parts installed , because they will be renewed. But I don´t want to work on a very very dirty chassis in my new plastered and painted garage
Some times later I could take the car home to my parents in the garage ...
And here it is the home for the body
Wankel in the chassis
Okay now it was in the chassis but not on motor mounts. As you can see it was very difficult to adjust the engine for a good position in the engine bay. So I built a woodden engine bay "mock-up"
In the next picture you can see how
MUCH space there was on the left side in the front
and how much on the right side .. but there I needed to install the manifold..... and anywhere the turbo.
The room in front of the engine is enough to install a new radiator, shraud and a high-performance fan ... and maybe the turbo
Here you can see how perfect the original driveshaft from the RX7 fits
I ordered a new manifold from ebay (*ironic* hey best quality *ironic*)
In the end I only used only the steel plate and made the holes wider that the arch would fit...
some arch(es) and tubes later:
Edit: 2012-12-23
To assemble the turbo I ordered a watercut flange plate without twinscroll
When I now assemble the manifold I can adjust the engine to the best position and make engine mounts
Before you ask... yes, there are some holes which I have to fill
to the street I want to use a RX7 FB rear end with disc brakes. 
