We have seen many and long discussions regarding alternative engines for the Murena.
I have just spotted the ultimate alternative engine: a Boeing-T50-Turbine gas turbine developing 370 HP. If the gas turbine is installed in the back of a Murena you can turn the exhaust backwards and burn any car chasing you.
http://www.autobild.de/artikel/porsche-928-boeing-power_1214975.htmlhappy building
Hans