Longer stroke engines will benefit nicely from positive displacement blowers as the torque figures go through the roof, & believe me, it's a bloody good feeling.

Blown hemi Chryslers don't need any more than about 5,500 rpm because they make great gobs of torque due in part to a stroke slightly shorter than my arm. When they run out of revs, just grab another gear & hang on tight.

An A15 will proportionally respond in a similar way. Don't rev it, stroke it.