You have a great car there and your making some great progress . I did notice the aftermarket water pump. You could get get the original rebuilt if you wanted to keep all the casting numbers right. It looks like it’s really a complete car that wasn’t swapped around ... I’d think it’d be hard not to bring all of it numbers matching including starter, alternator, distrubutor, carb,water pump etc.. as it’s got so much going for it.. I really like it, not telling you what to do but man it’s neat and to have the history! You may even consider the books that are out for guidance and help identifying what goes where ... Neat car!