Smaller single turbo / smaller twin turbo setup eliminates the turbo lag but it limits the modification level in term of 'milking' the highest power the engine could churn out.
Bigger turbo tend to have the turbo lag effect when the gearing is not play at optimum operation range.
At the end of the day, the engine type, amount of $$$ at your disposal and target horsepower are the main criteria.
Congratulation to our bro Isaac aka Silverboy on your new born baby!!!...
Welcome to fatherhood and hope this wouldn't stop you from coming to our yamcha...
Here's an option for extra car cooling benefits for your mr2s.
Works great to force more air in thru the side intakes.
Cooler engine bay = more reliable engine and more power...