The stays for the rear mount just in front of the gearbox mount infront of the strut tower on the left of the car and infront of the engine mount on the right of the car. Both finish via a hole cut oversize by 10mm, though the firewall, mounting opposite the side intrusion bar. These bars will angle toward the centre of the car to help with any flex/movement of the engine caused by hard corning. The energy in transferred into the cage which transfers it to the chassis rails. So the energy is not lost or used to unsettle the car.
With the front stays, they are finished under the dash, through the 'gutter' I guess you would call it( and a total pain to fit correctly..),then into the strut tower directly opposite the strut. Infact this is a total pain doing this job unless you sandblast the area as the glue is toxic, no room to work, very hard to prep correctly and balls of molten metal which cannot stick,'scar you'...
But if you can jump through all the hoops it can be done with no evidence that they are infact fitted to the car. The other option is to fit the 'bolt on' braces to the inner front gaurd which some people use. Im sure kam or evo will be able to enlighten us regarding these bolt ons.
Or you can seam weld the inner guard the fill with two pac high density foam which is just as good. Its light and very strong. Infact after the cage is fitted you could go crazy with the high density foam so its as stiff as a hardwood door!!

that is perfect

Damn trav, you found the sneak pics of my car! i wish

Yeah cage to rear strut towers would have been easy if i had motor out and respraying engine bay.

Im sure, if it had big re-enforcing plates around the tower, it will add alot of strength to the strut tower and chassis, also the back stays going to the chassis in the pic, rather then the back window area like mine and B24, but wount help in roll over, stop motor from coming into cabin in a huge rear end or stop suspension being riped out hitting a curb, so no huge advantage.

What is the progress report?
Is the cage finished?

Well i haven't really posted any pics up for years and years of my MR2 which was a street car but has now become a race car, well one day i hope it will be finished and driving.
 
Ill start up a build thread soon i hope, but the car for a long time untill recently was just a chassis, everything stripped off it (no motor, no interior, no wiring, no brakes ect just metal and some panels on the outside, but now im at the point of putting the car together there will actually be things to take pictures of!
 
But heres a little sneak peak of the car, well i suppose you cant really see much, except the air jacks im testing.
 
EDIT: Original YouTube video i posted has been removed, heres another one showing the air jacks
 

That is such a cool looking car and the air jack is something else. You are welcome to tow the car up to the MR2 trackday challenge to show it off! would love to see it on display.

Hahaha *jacks car up*.... *scratches chin*.... now what the **** do I do...