There will be no hood issues as long as you use the same intake or a similar one. I would get a cam that is compatable with the computer controlled carb you are using if your still using that style carb. If you still are using the computer carb your going to need to change the metering rods in it. GM had a 305 to 350 conversion kit for carbed camaros but it has been discontinued.
www.gmcopo.com sell a few items such as the prom chip for the conversion.