The 2 Litre Duratec has to be the 4 Cylinder engine to tune as far as Morgans go.. upto 350bhp in a very light package.

Check out http://www.burtonpower.com/technical_1/duratec_he.aspx

It would be worth you getting their catalogue.. if for no other reason than to look through at what it takes to tune the Duratec.