Small ends gone on my sons mk2 fiesta. Looking at options. Would appreciate some suggestions please. (I’m pretty good with spanners being old and that!)

as above its a 2.0 blacktop in there now which I’m quite happy to swap out for something else.

silvertop? Garage that diagnosed suggestion
st170? More work of course
or same as if I can find a half decent engine
or 1.8 Zetec blacktop, found a tidy low mileage one

thanks in advance.