CV joint boots, that is.

After a track day, I noticed that the 2 internal boots were split. The CVs haven't given me any indication that their time is up, and the outer ones had been replaced not too long ago and seem in good shape. So the question is, do I just replace the boots or do I spring for the CV joint kit which comes complete? No need to spend where I don't need to.
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James now has: 2008 987S 6 speed
Crashed: 2010 987.2 pdk in speed yellow!

Sold to a cool racer chick: 2004 986 S
YouTube channel: the PORSCHE as seen by NewArt
www.youtube.com/channel/UCohdrH2xHTklM1thxk0KKOQ?