What is the best vinyl to use for the targa sides and top. I'm looking for close to original as possible, and where can I purchase it?

Talk To James at appearence products (Morph) in the vendors section. John

I have seen kits for sale on Ebay and other places carry them as well... if you could find the same material you could literally make them yourself.

Also CAMP914, Pelican, AA, PP/Automotion, SMC & even Porsche dealers IIRC sell them.
... vast difference in prices, but CAMP914 is a repro (as is Morph/914AP.com/member vendor) & maybe the others except dealer.
..... I've seen CAMP914 on the yellow 72 COTM Nov`09 & it's a match, & others say the ones I noted above are also correct or very close to OEM (see posts over in O&H Forums).

buy the original stuff. We import it from Germany and perfectly cut it. It installs with a little spray trim adhesive after masking off the area with blue tape and masking paper.

Whatever you use, the following instructions seem to be great advice. I ran across them this morning while searching for relavent tips and tricks.

vinyl replacement instructions

I used Camp 914 (shameless plug). Used the 3M adhesive can as a roller to knock out the bubbles... take the good Dr.s advice and mask the whole thing...

I used James'(morph) and it looks great.