Yes, you can replace the crash bar but there may be damage to the sub frame that you will have to check out. If so, this is usually not considered repairable & the insurance company would total it.
I haven't handled that plastic so I can't say for certain, but when I find cracks in plastic my usual method is to use a soldering iron to remelt and add some structure where the crack is. Doesn't work on all plastics, so test in a non-critical spot first if you do this. JB Weld might work, if I tried that route I would rough up the surface so the JB Weld has a better surface to cling to.found something else tonight....that being where the headlight has a screw going thru the back of the housing and securing it to the the radiator mount I guess. Anyway, both parts are that weird kind of plastic and I was wondering if JB Weld (the best) will stick to that kind of plastic.
I haven't started dismanteling yet but should I come across any more cracks could I just JB weld them since that stuff has umteen thousand PSI strength?