I know it has been asked on 3Si, and heck I could do a search, but I figure we should build the content here.

I know for drag racing, the lighter rotating mass of a carbon fiber drive shaft is probably a must.

But for me, being that I want to build a fun clean reliable '99 VR-4 (not going to drag race her, she will be on collector's insurance soon and that is a HUGE no no for them) I'll build her to 13T, maybe bump it up to 19T in the future but I'll be staying TD04.

Is a carbon fiber drive shaft worth the expense on a car that will not see the drag strip or anything beyond the non competitive track day?

-John