Rover K-Series Upgrades 
1. DVA Power - http://www.dvapower.com/. Dave@DVApower.com or phone on 01908 322652.
2. Turbo Technics - Super Charger upgrades, see http://www.turbotechnics.com/docs/cars/elise%20index.htm
Honda Turn Key Solutions
1. www.HondaElise.com Link-Up (UK Based) (Fitted by Blink Motorsport plus many others, manufactured by the excellent ‘Elise Parts‘ ) - 200+ Honda conversions in Europe. Approx £7.5k with your own engine. Designed by Simon Scuffham and Richard from Blink Motorsport. Probably the most developed kit in Europe with excellent standard maps.
2. Sinclaire’s Kit (http://www.lotusrepairs.com/hondaconversion.asp). Approx 7.5k with your own engine. Remote oil filter as standard (moved to the wheel arch).
3. Komo-Tec - Germany company (http://www.komo-tec.com/index.php) - Drive your car to Germany and they put in your engine for 9000 Euro plus tax.
4. Tony Stansfield - Phoenix Motorsport, Alcrington - 07714089370 - This is the best value conversion, costing around £4.5k fitted (if you supply the engine). Some of the sub-frame is altered to accommodate the oil filter. You may also want to consider some extra heat shield, and an Elise Parts manifold and exhaust at extra cost.
5. Stark Automotive - http://www.stark-automotive.co.uk - Released in 2007, UK based kit.
Honda DIY Conversion Kits
1. Sun International / SunSpeed (US Based) (EVO-GT/Steve Cops in the UK) - Manufactured in the USA.
2. Stark Automotive - http://www.stark-automotive.co.uk - Released in 2007, UK based kit.
Honda Parts - 3rd Party
1. Clockwise Motion - http://www.clockwisemotion.co.uk/ - K20 tuning parts, including an excellent ‘drop-in’ baffled sump - http://www.clockwisemotion.co.uk/index/honda-k20-baffled-sump.html, contact Ian 01527 871191
2. Hondata - http://www.hondata.com/ - Modified ECUs for K20 engines.
3. AEM - http://www.aempower.com/ - Bespoke ECUs for K20 engines and others, live mapping, great software and literature.
4. Advanced Motorsport and Tuning - AEM and Motec specialist in the UK - http://www.advancedme.co.uk/ - Dan Turner 01908 648 955
Audi Conversions
1. Auto-Teknix. Fitted the first Audi 1.8T in the UK in 2003 http://www.auto-teknix.co.uk/Audi.html
Others
Bike engined Elise? - Try, http://www.zcars.org.uk/lotus/index.htm
Elise Parts and Accessories
1. Eliseparts.com - http://www.eliseparts.com/shop/index.php
2. Hangar 111 - http://www.hangar111.com/