Welcome to the place. What sort of noises is the amp making?
The original tank was a full length Accutronics tank, so if you have a short tank, it has been replaced. The Frank head didn't have any Molex connectors, so if your amp has some, they have been added as well. If you describe what the connectors are connected to it might help to figure out why they were added in.
I am not a fan of recapping unless the caps are bad, but the 7500uF caps will work as replacements. I would suggest fixing up the problems with the amp before doing the caps, so that you don't add to the problems before figuring them out.