OK,so I tried SEVERAL things when installing this sucker and this is the best setup I've come up with...
First off the tC arm and Corolla arm are not the same. Corolla is MUCH larger. If the tC is put on the Corolla, it will not open all the way.
There are two plastic tabs that hit just behind where the screw hold the arm to the arm rest. (can't really see them as the pic is head on, but this is where to look)
You can either cut those tabs, or do what I did and cut into the arm...
When put together, should look like this
Next step (also shown in the above pics) is to trim down the back part of the arm...
Next is making the pegs fit
Dug out the holes on the inside of both for the pegs to align
Then dig out the holes in the above piece
That's it for the top, now for the bottom.
I tried to use the stock arm rest's bottom and cannibalize it .....
FAIL!!!!
So next plan to mock it up and see how she fits to brainstorm...
NOT ACCEPTABLE!!
so I came up with this...
OK, so the gap is taken car of (no pics, but looks ok)
WORKS LIKE A CHAMP!!!!
I'm currently plasti-dipping (go figure!

) the arm to make it look better. Pics tomorrow as it was dark when I finished and used a flashlight to get this much.
OK, so after I plasti dipped the L bracket for aesthetics
(really rough paint job, but i dont care enough to redo it at this point)
Then viola!
well, here is the tC arm rest all completed after re-wraping it with my choice of fabric (will be used on door inserts as well)
I LOVE this thing! It's nearly level with the arm rests on the doors as well (which it should have been stock IMO!)
Big thanks to everyone who helped me want and do this!!! I could not and would not have done this without you guys!