SA usage for many proxy-id

Hello!

I´m using a SSG140 6.3.0r17.0 and a customer is asking to establish a VPN using Cisco ASA 5545. He provided me as a proxy id, 10 networks as his local IP and 15 addresses /32 that I´ll have to NAT my servers IP. As long as there is a security association for every proxy-id, in this scenario, is there a way set up a VPN that will not consume 10 x 15 SA?

Thank you in advance

Bruno