I know of the updated C70 headlights and indicators for the front but does anyone make any aftermarket kits for these cars yet?

Yes check out, http://www.vptuning.com

70 Series Jewel turn signals
http://www.vivaperformance.com/parts/catalog/images/2003_70_turnsig.jpg

70 Series DOT-spec "Jewel" Headlamp Kit
http://www.vivaperformance.com/parts/catalog/images/2003_70_headlight.jpg

70 Series Euro spec Clear "Jewel" headlamps
http://www.vivaperformance.com/parts/catalog/images/2003_70_headlight.jpg

These two might not look different but they are.

70 Series "Jewel" Lense Replacement Pair (glass only)
http://www.vivaperformance.com/parts/catalog/images/70_jewel_glass.jpg

70 Series Euro Turn Signal Lenses
http://www.vivaperformance.com/parts/catalog/images/70_clear_corner_lenses.gif

Also FCP Groton has E-code head lamp lens's and clear turn signals for our cars. U.S. DOT and the E-code ones. I have the E-code lens's for my S70 and the E-code clear turn signals.

http://www.fcpgroton.com