Pretty much, mounting of the passenger side mount differs - starlet is mounted on the front, corolla on the top. Usually the corolla boxes just need the holes drilled and tapped.
Basically you can look at almost any c series box, but just take note of the passenger side engine mount as above. Anybox from behind an e series engine can be made to work.
As an indicator of how the C150's go , that's whats in Jilly's car , seems to be holding up ok
EP82 Starlet GT club race car;
best time around Manfield to date : 1:19:91
"Understeer" is when you hit the fence with the front of the car.
"Oversteer" is when you hit the fence with the rear of the car.
"Horsepower" is how fast you hit the fence.
"Torque" is how far you take the fence with you.