Everything as said above ^^^
I assume youre restoring it to be a shelf queen in which case the strength of the plastic shouldnt be a concern since it will only be sitting idle for the rest of its days. If you do want to bash it about, then buy the re-release because it will be fresh and crisp.
Because you are restoring a car that has been since re-released, parts will be plentiful. Ebay, tamiyaclub.com and others. Either complete kit, or broken down into individual blister packs.
On the topic, restoring an old Tamiya is very, very rewarding. My project is a Tamiya Falcon which I purchased in 2005 as a complete bomb, and now in 2008 it looks like it was only built from the box yesterday. It sits on my shelf and looks great! It's cost me about $320 AUS so far and I now only need new front rims and tyres and its finished.
Good luck and enjoy!!
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