Meet the TK family!

Here's a little random something I've been working on during the semester. The member of the Smoky Mountain Automotive Track Kart family from left to right: the SMA Ferret, SMA Weasel, and the SMA Mongoose. So a long time a ago I said  here manaista.deviantart.com/art/SM… that I was gonna make the siblings to Weasel, welp here they are! (I know I also said I was gonna color that and many other ones, but I still haven't gotten around to it )

Of course any constructive feed back would be greatly appreciated!

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SMA Ferret:
In short: A smallest and simplest vehicle TK family to intended teach rookies the fundamentals of performance driving.
Curb weight:  300 lbs (136.1 kg)
Engine: 400cc air cooled inline 2 engine with adjustable power ratings between 15 and 40 hp 
Transmission: Chain driven single speed solid axle with easily replaceable sprockets to change the gear ratio.   
Options (not shown): Fiberglass cowlings to help reduce areo drag. A steering wheel mounted race computer and push button starter. A three speed sequential gearbox with a manually adjustable limited slip differential.  A 700cc liquid cooled v4 rated between 35 and 60 hp.
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SMA Weasel:
In short: The middle child of the TK family. For those ready to see competitive track days. It's a car stripped down to the bare essentials for a lightweight, simple, and affordable racing machine. 
Curb weight: 1280 lbs (580.6 kg)
Engine: 3.0L Naturally aspirated v6 aluminum engine rated at 300 hp 
Transmission: 5 speed manual with a manually adjustable limited slip differential
Options (not shown): A 3L supercharged engine rated at 375 hp, a four piece bolt on adjustable aerodynamic kit for added downforce
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SMA Mongoose:
In short: The big sister of TK family. For those serious about their driving ability and more than ready to transition a into professional racing league.
Curb weight:  1500 lbs (680.4 kg)
Engine:  4.5L v10 with twin variable geometry turbos rated to 720 hp
Transmission: 8 speed twin clutch with electronically assisted traction control and brake bias.   
Options (not shown): An AWD hybrid system ( two electric motors in the front and one on the drive train) rated to a total output of 900 hp.  Custom designed, track specific body kits. A fully enclosed street legal body kit.