I have spent a lot of time making a decent and cheap list of upgrades for the Type E and this is what I came up with. I am a total newbie in the r/c world so this is not exactly the cutting edge, extreme competition stuff but it is a nice set of upgrades to ease your way into more advanced things and also save some cash for those advanced things
54025 Tamiya TT-01E Ball Bearing Set
54026 Tamiya TT-01E Aluminium Propeller Shaft and Joint
54058 Tamiya TT-01E Aluminium Steering Set
53662 Tamiya TT-01 Turnbuckle Tie Rod Set
53673 Tamiya TT-01 Toe-In Rear Upright
53619 Tamiya CVA Mini Shock Unit Cylinder x4
53674 Tamiya TT-01 Adjustable Upper Arm Set
The upgrades will cost about £130 depending on the retailer and they are the ones that can make the biggest difference in this car.
The adjustable upper arm set allows camber angle adjustments for all the wheels as it comes with 4 upper arms, all for £11.
The toe-in rear upright and the turnbuckle tie-rod set allow for a set toe-in on the back wheels and adjustable toe-in on the front wheels.
The mini shocks are nothing sexy since they are plastic but they include oil dampers which is a huge upgrade over the stock friction dampers.
The rest of the upgrades are pretty much self explanatory. Ball bearings allow smoother power transmission and so does the Alu shaft and joints. The Alu steering set will stiffen up the steering response and reduce wheel play in front.
There are a couple more expensive optional parts if you really wanna spend some cash. The first worthy upgrade is the Ball Diffs. I don't know much about them but my understanding is that they are smoother and they are also limited slip. Alternatively, you can go for the front one way diff which makes the car brake with the rear tires only to allow more steering control in front during braking. And finally, there are some carbon shock towers that look really nice but for the most part are useless unless you want really fine adjustment of shock angles.
DO NOT waste your time with the stabilizer sets. For starters they do not fit the Type E.
So i hope this helps a newbie out there. Have fun