This is very best case though as most 2.0 engines dont make 150hp now let alone one from the 00's 90's or 80's
From a quick google on several popular every day cars like the ford galaxy, vw passat, etc. lot of late 90s, early 00s 1.9-2L engines on popular vehicles range from about 89BHP to ~143BHP I think 150 is quite opptimistic for an average.
