You're absolutely able to spoof SMS numbers from a technical standpoint, but you'll have to go straight to an SMSC or aggregator that lets you do it. I haven't

You're absolutely able to spoof SMS numbers from a technical standpoint, but you'll have to go straight to an SMSC or aggregator that lets you do it. I haven't checked in years, but we had to write an SMPP library to pull it off. That sucked.