Is the TT-01E just an upgrade to the TT-01 its self or a totally different chassis
Upgrade only.
You can convert a TT01 in TT01E with this parts:
2 x Tamiya TT01 Type E A-Parts Upright 51318
1 x Tamiya TT01 type E D-parts Upper Deck 51319
1 x Tamiya 3x15mm Screws 4pcs. 9805859
1 x Tamiya 3x8mm Tapping Screws 10pcs. 9805754
3 x Tamiya 3x12mm Tap Screws 4pcs. 9805629
1 x Tamiya 3x10mm Screws 10pcs. 9804159
1 x Tamiya 3x15mm Tapping Screws 10pcs. 50583
1 x Tamiya 2X10mm Cap Screws 2pcs. 9805632
1 x Tamiya 3x12mm Counter Screws 10pcs. 50581
1 x Tamiya steering post 2 pcs 9808016
1 x Tamiya 3x12mm screw (for steering post) 2pcs 9805684
check the tt01 thread for more info.
http://www.rctech.net/forum/electric...-01-forum.html