Birkin America - www.birkinamerica.com: Makers of the Birkin S-3 kit, which features an aluminum-skin space frame chassis. Not included is the Ford Duratec engine, transmission, wheels, tires, and some other necessary equipment. This popular kit starts at $19,500.
Brunton Auto - www.bruntonauto.com: The Brunton Stalker can be bought as a kit, a turnkey version, or a fully trimmed version with either a V-6 or V-8 engine. A fully built LS1 V-8 Stalker goes for $36,000.
Caterham USA - www.uscaterham.com: The one we all know, Caterham offers a range of replica Lotus 7 kits, including the infamous Superlight R500. Kits cost anywhere from $19,580 to $61,057.
Deman Motorsport - www.deman-motorsport.com: Deman offers modular kits for its SR7, so customers can build their Lotus 7 replica over time. The SR7 can use a Hayabusa or Mazda MX-5 engine.
MK Cars - www.smartsportscars.com: The US distributor for MK cars, Smart Sports Cars sells kits for the Indy R. Based heavily on Mazda MX-5 components, the MK Indy R features a fully independent suspension. Also on offer is the MK Midi, a mid-engined 7.
Super 7 Cars - www.super7cars.com: Based in British Columbia, Super 7 sells Caterham kits, including the Super 7 GSX 1300R "Hayabusa," which does 0-62 in under three seconds.
TRV Motorsports - www.trvmotorsport.com: The least 7-ish (at least in appearance) car on the list, TRV manufactures the Open Tracker turnkey racecar. It features a Chevrolet V-8, and the complete car starts at $22,995.
Westfield Sportscars - www.westfield-sportscars.co.uk: Another well known name in Lotus 7-inspired cars, Westfield is located in the UK, but sells cars in the United States. The SE is offered with a variety of engines, and can be purchased modularly, as a complete kit, or as a factory-built car.
Wharton Industries - www.whartonindustries.com: Wharton builds LIST (Lotus Inspired Seven Type) chassis for use with American V-6s and V-8s. Wharton also manufactures a chassis for use with a rotary engine and components from the Mazda RX-7. Available with live or independent rear suspensions.
World Class Motorsports: www.worldclassmotorsports.com: The WCM Ultralite uses the powertrain of the Honda S2000 good for 240 horsepower and 0-60 spring in the low- to mid-three-second range. The Ultralite S2K weighs 1240 pounds, and starts at $38,750.