I am possibly considering replacing the elise with a caterham, as seems all the rage at the moment

I've driven a few caterhams. An SV chassis which was brilliant, and a perfect fit. A race car, with no seat or seatbelts, and a road car with plush seats. The race car had tight pedals, and the road car gave me cramp in both legs after 2 minutes. I'm excluding the SV from my search, as all the K series SV's are too slow, and the CSR's are too expensive. So, i am stuck with a narrow chassis K series model.
Is there anything that can be done to make a bit more space in the pedal box? I need to drive a caterham again, as its been a year, and i have forgotten exactly what the issue was, but if i remember rightly, it was a general lack of space, and ability to feel which pedal i was about to stomp on, (or which 2 pedals when i got it wrong)
So, any experts with any tips??
Neil