There's no one answer for POL (backorder) parts. You should find most come relatively quickly. But sometimes there are supplier issues or whatever that take much longer. There were a couple items on my Coupe that were many months after delivery. The side pipes (which I didn't use...) and the headlight covers were even longer. But neither held up the build. My Coupe also was shipped less many of the suspension parts. Just looked at my records. I had most within about 6 weeks. I don't know how that compares to the current situation. I have a few suspension parts missing on my truck kit delivered right after yours. I'm starting my follow-up with Factory Five today. Hopefully will get an idea of what to expect. Suggest you do the same. Don't wear out your welcome but establish a communication link there for regular updates. That's worked for me. Hopefully you'll find there's typically plenty of work that can be completed even with backorder parts. Just sometimes not in the exact assembly sequence.