Jason:
Lots of guys look for a 1969 - 1970 pan, since that was when VW went to the more desireable independant rear suspension (IRS). They still had ball-joint FRONT ends then, too, before going to the McPherson Strut front ends on the Super-Beetles around that time. Super-Beetle front ends and pans are not really useable for a Speedster as the struts are too high to fit under the front fender line and it is a MAJOR job to change them back to a torsion tube front end - MUCH simpler to just get the right thing to start with.
Having said that, there are a LOT of unfinished kits out there just waiting for some kind soul to come along and finish them. Why start from scratch if you can find a partially completed kit to be finished that has had a lot of the major stuff already done?
Wander through the "Knowlege" section of this site to get you started, check out some of the build sites of members (there are several, like Jerome Smith's and Chris Sutton's - both excellent).
Also, check out the library section of this site for the on-line assembly manuals for CMC cars. CMC's are no longer available new (although the company came out of bankruptcy as "Street Beasts" and is still around) but the manual is a good example of what needs to be done to build a car and is reasonably well written (at least the newer version is.....) The Library section also has several "must-have" books for the early Porsche enthusiast to get you salivating even more for these nifty little cars.
These cars are not for everyone........you have to remember that they are pretty true to their early 50's design AND early VW Beetle eccentricities, so creature comforts are minimal, they often leak rain water from hard-to-find places, they often need tinkering with things that loosen or break or rust or whatever, and we all never seem to get over changing something on them to make them "better".
On the other side of the equation, they ride and handle pretty well for the dated suspension design, they are a BLAST to drive with the top down (and claustrophobic with the top UP!), with the right engine size they have plenty of "zip", and they turn heads and get attention where ever you go (sometimes, too much attention!!). They're really a VW Beetle underneath, so parts aren't too dear and they are quite easy to work on if you've a set of metric tools, a little mechanical ability and some common sense.
Hope this gets you started, and watch the classified section of this site for that occasional unfinished kit (there was one in Fall River, MA just a short time ago).
Gordon
One of the "Speedstah Guys" from Rhode Island