Help! Need to find part ASAP

[DyerSDMFT]

My husband is restoring a 1986 Chevy C-10. The man we bought her from had a jackwagon son in law that snatched the V-8 out and put a really bad V-6 in. My hubs is putting a V-8 back in but the Frame mounts won't line up, so he's trying to find engine frame mounts for a small block 350/V-8. We have found all kinds for cars but not for the C-10 pick up. Anyone know a good place to start our search? Need these ASAP as we have a scheduled trip planned and we need this truck right so we can make that trip!