infinite because you can go to a special island on the ocean realm that gives 1 ring each time you beat a extra spirit temple with phantoms you ca get the island by getting 10 coals to linebeck
The easiest way to get a Regal Ring (besides from Linebeck's treasure) is to simply enter a contest. If you read the billboards, then there's always a contest for how many things (Sorry forgot what they're called, haven't played it in a year). The billboard should say what the prizes are. The Regal Ring (if it's in the contest) is usually the prize for 1st place. I just kept doing that until I had enough for the Golden Train
There are many keys that need to be found in order to complete Spirit Tracks. You'll need to be more specific, please.
there are 5 temples
Two
Two.
All of them, he has been the final boss in every game, except spirit tracks.
The 2011 Buick Regal has 16 valves.
The 2012 Buick Regal has 16 valves.
The 2001 Buick Regal has 12 valves.
The 2014 Buick Regal has 16 valves.
The 2013 Buick Regal has 16 valves.
The 2003 Buick Regal has 12 valves.