wow, for 29 years of abuse it didnt look that bad. but you should be real happy with the new one. carefull with the bowl work. it doesnt take much to screw em up. leave all the leading edges and just smooth out the surfaces. or better yet, talk to a professional before you dig right in. otherwise, way cool man, hope you are fully satified with the new stuff. yippee.
oops, just re-read it and notice your not touching the bowl. and yes smoothing out the suction housing is a good idea. good luck.