So 2 ohm component speakers in the front will damage the factory bose amp? any chance of it damaging a aftermarket HU? Is it best to just get 4 ohm components in the front? Can I get 4 ohm throughout the car and then upgrade to a better 4ohm amp later?

 

It might work, it might not. But when an amp dies, there's all sorts of fun stuff that can happen. It could fry every speaker connected to it. It could literally burn out and start a fire. It might just blow the fuse, or it might just not work at all.

I'd just avoid the gamble completely and get a different amp. I've yet to see an amp that is stable at 2 ohms is is not stable at 4 ohms.

With these very basic questions you've got though, I suggest doing a bit of reading on car audio, or just pay somebody to do it for you.