To use open your shapes file with ResEdit and open the Shapes Patch file that you downloaded and double click on the patches .256 res and then copy the 'Weapons in use' res and the 'CyberHead Items' res and then paste it into your old .256 res in your shapes file. It will ask if you want to replace, say yeah. Do the same with the sound patch and there you go.
Still to come, alien gun and maybe get the contrails for the new weapons.