I have found some of the fiberglass body parts and tanks from Europlast, in Italy, to be very good pieces, and priced very competitively. The TT2 and Pantah race tanks are very nice, and come with caps, taps, aluminum pegs and rubber mounting straps. The Pantah race seat is a good replica of what the factory used. They have the TT seat with and without the battery opening, and they are the equal of many. The F1 belly pan (hard to find now) is, sadly, one-half inch too short where the wellnuts are for it to fit quickly---it requires some modification. The company also has many of the small parts like caps, fuel taps, rubber bumbers, tank bungees, etc., that you need. Finally, another great group of guys in Italy. Here is their web site.
http://www.europlastsucci.com/Attachment:
tank Pantah 600TT Europlast.jpg [ 12.54 KiB | Viewed 2042 times ]
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seat Pantah 600TT Europlast.jpg [ 15.68 KiB | Viewed 2042 times ]