Nissan hardbody solid axle swap Nissan Hardbody (D21) Solid Axle Swap (SAS) Nissan Hardbody (D21) solid axle swap / straight axle swap kits and parts. Nissan Nut.com 77 rows · Nissan Hardbody Truck (D21) Solid Axle Swap (SAS)... Source Source Source Source Source Source Source Source Source Source Read Also: Solid axle swap kit for nissan hardbody Nissan hardbody solid axle swap kit Nissan hardbody solid axle conversion Nissan hardbody straight axle conversion Nissan hardbody solid axle kit Nissan hardbody solid front axle