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BOSS Maintenance Items

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I'm about to take my BOSS into my local dealer for some maintenance. My BOSS has almost 20,000 miles on it and about 20 track days in total. My plan is to have the spark plugs and transmission fluid replaced. I've been changing the trans and diff fluid at the end of each season and will have my diff fluid replaced when I install my CorteX watts link in January.

I'm also thinking about having the radiator fluid replaced. Is this necessary? Are there any other maintenance items I should address at this time?

1. Spark plugs
2. Trans fluid
3. Radiator fluid?
4. ??
 
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Coolant flush and fill is a good idea; it's been in there probably since 2011, cheap insurance. Ditto on the sparkplugs, even if they look good, change them and "benchmark" the wear, more cheap insurance.
 

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