Even then those clamps are rubbish. I know of two other S197 F1 cars where they couldn't keep the inlet pipe on. Hell, mine at 500 to the wheels wouldn't stay on either. Best thing is to put a lip on the pipes, and go with T-bolts.
Measure the distance from the outlet to the shock tower, k&n has a great search feature.
I've found a bunch of short filters that I may use if my intake project doesn't work out.
K&N RU-4250 3.750" ID 5.000" height
K&N RC-8480 3.750" ID 6.750" height
K&N RU-3530 3.750" ID 7.000" height
K&N RC-4840 3.875" ID 2.750" height
K&N RC-5057 3.938" ID 3.625" height
K&N HA-2440 4.000" ID 3.500" height