It is best to get the 63 Oldsmobile service manual. It don’t have the best pictures but is better than you will find on the net. You can also join Wild about Cars. I believe it has a fee but it has the 63 assembly manual that you can download to your computer. it is not that user friendly but Wildaboutcars may be the best way to go because they also have the 62 Jetfire manual and 63 service manual that you can also download. It is best to use the 63 manual for the coolant lines because it is a much better setup than the 62 style.
For the most part you have to rebuild what is there. You are not going to find anything that is a bolt on replacement of the original parts. Jim Noel can rebuild the entire system for you. You can find his ad in the classifieds section.
I can rebuild your Jetfire turbo system, if you have one. If not, I can supply the complete turbo intake system and intake manifold for a 62 or 63 Jetfire. Just let me know what your needs are.