Visit www.locostbuilders.co.uk

Im currently building a bike engine onyx mongoose and aiming for less than 400kgs and a power to weight of around 350-400bhp per ton using an old Kawasaki zx10 engine.

They cars are quick because they are built to be light so they can make the best of the bike engine. Clutches can wear but depends on driving style. Most people fit uprated clutch springs and it usually sorts and issues.

There are plenty of kits available
www.mkengineering.co.uk
www.mksportscars.co.uk
www.mnrltd.co.uk
www.mac1motorsports.co.uk
www.ariesmotorsport.co.uk
www.luegosportscars.com
www.tigerracing.com
www.sylva.co.uk
http://web.mac.com/rawuk/Raw/Home.html
http://www.greatbritishsportscars.com/news.php
www.roadrunnerracing.co.uk site is down right now
www.agmsportscars.co.uk
www.daxcars.co.uk to name a few.

these all do 7 style cars. you have a large choice.