Hello

Are there any fuel injection systems that would fit a 1275cc MG metro engine?

Yup, i expect so. Throttle bodies off a motorbike might be a good place to start.

Adam

Not that simple with a 5 port head!

Well worth getting Dave Walker's (Haynes) book before you embark down that route!

Wyn

single point from a late mini!

Unfortunately getting throttle bodies to work with the A Series siamesed inlets is very difficult indeed, due to charge robbing problems causing one cylinder in each pair to run rich and the other to run lean.

Here is one persons experiences (very well made setup, but had to abandon it due to the DTA ECU not being suitable):
http://www.planet.eon.net/~chichm/efi/efi.htm

A good thread on the Megasquirt forums about this topic:
http://www.msefi.com/viewtopic.php?t=7710

Read the link below. Dave Walker describes fitting fuel injection to an A-Series Midget, with excellent results.

http://www.emeraldm3d.com/em_projects_Aseries.html

Hope this helps!

Andy