I ran Corally stuff fore a long time, a long time ago. I had the aluminum chassis cars, the sp12 with seperate a arms on each side.
They are very nice pieces, and handle very well. The only downfall, at least then is 75-90% of the car is Corally only parts, most cars use alot of Associated parts in their construction like front ends and so on. They USED to use all metric hardware. I'm unsure if the still do but metric hardware is sometimes hard to come by at the racetrack. Their cars designs are neat, they were the first to put the bearings inside the steering block. Problem is, they still use Corally only wheels. You just can't go to the hobby shop and pick up a set of mounted foams, they don't fit.