Btw are you okay with the more realistic height values? The built in cars are way too low (~1/5 of the length or even less) - Impreza will be 100 units long with 31 units height.
I do not recommend that. Stunts stretches 3D models and bitmaps vertically by a factor of 6:5 (
an explanation and
some evidence). To compensate for that, stressed models should have their height reduced by 1/6. Incidentally, I committed this mistake with the original release of Skyline, and it looked like a truck next to the other cars. (Also, that's why if you check the readme of Skyline in the current ZakStunts pack you'll find it is actually the 1.1 version...)
P.S.: If you are using the latest Windows release of stressed (the 0.1.0-rc5 in
this post) the rescaling of the y-axis should be done automatically for 3D models, so the car should look right with the height corrected by the 5/6 factor.