how much does it cost?

[lincpimp]

Well, heres the breakdown on my tekno conversion

revo 3.3 roller from the traxxas forum - $155 (came with a ton of spares)
tekno conversion kit - $150 (I paid less via the per-order discount)
Aveox motor from ebay - $85
Quark 80 airmaster - $80 (lhs hookup deal)
pair of 2200 5s 20 c lipos from united Hobbies - $110
ccbec - $20

Now there is the case of whether or not you have a charger, and will use the stock servos and radio gear. The 2055 steering servo could be used as the brake servo and upgrade to a decent single steering servo with good specs.