bottom end strength of a 302

I want around 300-350 hp by changing out the heads/cam/intake and adding a supercharger along with the other little things required. Does anyone here think the stock bottom end with 141k on the ticker handle this without tearing itself apart? :hail2:
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Do a leak down and compression test first. You will more than likely experience a good bit of blowby with the miles on your car. Also, you will make a lot more than 300-350 with H/C/I and a supercharger.