I'd try to get more details from them on what the issue is that they can't align the truck. As for your lift question, some pieces are shared, most aren't. If you replace or crank the front torsion bars, you'd need to get an alignment, then you're back to figuring out what it is that's...
Truck doesn't have struts, I'd be concerned about the shop if that's what they're telling you. Also when you say you're suspension is going out, that's a broad statement too. Miles and year of your truck? If higher miles, may just need new shocks, OEM is a great and inexpensive solution...