If I were you I'd also post a message on the "Mini & Micro R/C Cars" thread if you are interested in the TLT. Perhaps, someone who has already set one up, will provide you with a list of components to base your TLT on if you do purchase the TLT. Meanwhile, I'll add my .02 for what it's worth.

The radio transmitter dictates the type of receiver and crystals because they must be compatible (AM, FM, HRS, single, dual)--but the transmitter/receiver doesn't care if the R/C is nitro, electric, or a gas/oil mix. If a Futaba transmitter module and HRS receiver is used, digital servos and voltage requirements must also be met. Furthermore, if the kit requires a 3-channel receiver, don't try to save a few dollars by purchasing a 2-channel receiver or something will not get hooked up.

Size is also an important factor because the receiver, electronics and batteries must fit inside the kit. Size can also affect the overall price of the components--think of a good laptop computer and compare it to a desk top computer. Over all, desk tops are cheaper on the norm yet they can be upgraded out the wazoo for pretty much the same price as a good laptop.

In addition to size, the type of servo chosen also depends on whether one wants speed, torque, metal gears, a servo saver, and so on. In the past, I've posted links to a servo chart that lists servo characteristics but I cannot do that right now because I am not on the correct computer. You can either search for it or reply with a request and I'll try to post it late tonight. Furthermore, some types of servos also need to have the connect end trimmed to fit certain receivers unless an adapter is added. The ESC or electronic speed control pretty much functions as a "throttle" servo and possibly as a "reverse" servo if the ESC is equipped with a reverse.

Consequently, some ESCs have reverse and some don't. Some also allow reverse to be disabled for racing. Some ESC models are supposedly water proof (LRP). More importantly, most ESCs have motor limits and voltage limits. Some ESCs, such as some of the Novaks, can also be plugged into an add-on to the Novak Millennium Pro charger and custom programmed. A couple of my ESCs (LRP & Novak) have cost more than kits themselves so be forewarned.

Good luck with your purchase and have fun.