Engine Stand Adapter Allison 1000 2000 2400 np205 np203 sm465 nv4500 PTO mount December 25, 2023 admin Engine Stand Adapter Allison 1000 2000 2400 np205 np203 sm465 nv4500 PTO mount. Works with any Engine stand that accepts 2 3/8 adapters (common size). Share