You think about it though, it's achievable.

BMW did it in F1 back in the 80s using standard off the production line cast iron 318i blocks.

1500 horsepower in qualifying trim pumping around 8 atmospheres.

They used to early entry the corners to make the straights longer because they got more benefit from the extra straight line speed than carrying corner speed! Black smoke plooming out the back of them.

Oh, and get this... 1.5 litre, 30mm stroke!