Teaman, yrs truly's 'thinkin there's a whole world of possibilities for soon to be and previous obsolete IRL/Indycar motors for E and F classes.
Kinda like the surplus NASCAR motors that are vitually a requirement in C Gas anything .
If ya shop around they are probly just as cheap!
Neat thing is, the Indy engines are traditional "PUREBRED" racemotors, but, on second thought. dollar for dollar I'm expectin' the NASCAR stuff to be comarable, adding in all the engineering/r&d hours, etc, costwise!