this happened because the two engines share the same displacement. Seeing as there is a svt focus his buddy thought maybe the speed and svt are interchangable.
and for the record:
mercury tracer
escort gt
mazda miata
mazda protege
all use the bp engine. the tracer, egt and protege have fwd variants, the miata has the rwd variant. KIA also uses the 1.8l.
Many parts are interchangable.
As for the FSDE the only "ford" cars that would interchange with your engine are a probe 4 cyl as it has an older variant of the fsde. Nothing on that engine is an upgrade to fsde owners of 3rd gen protege.
this thread may die now