The ISS kits are being manufactured by Oshkosh Defense (OSK).
Force Protection awarded $82M contract modification for ISS kits
Force Protection (FRPT) was awarded an $82.33M firm-fixed-priced modification to contract for the purchase of 755 independent suspension system, or ISS, kits. Work is expected to be completed by 31 December 2010. :theflyonthewall.com