The car has a new XR3i rad in it already but I assumed I coudn't use it if I wanted to fit a turbo and intercooler. There certainly doesn't seem enough room as it stands.

I had heard the S1 rads were a different size to the 3i ones before. Just need to get to the bottom of it really. I don't want to replace a perfectly good rad if it will do the job - just sounds like it won't.