Stick it on a set of Weber 40 carbs and an after market ecu like OMEX or Weber Alpha and expect to see around the 155bhp mark.
You could even use a MegaJolt ECU, See AF Racing for further detials.
either way its a very cheap 35-40bhp and none of the fannying about and aggro you get with turbos.
Alternatively stick an ST170 motor in there on after market management and see around the 170-180bhp mark