sensor locations?

[Con-Tiki!]

i've narrowed, i think, the differences in the 2 b230's i'm working with.

can anyone tell me where the crank position sensor is? ('92 non turbo)

also, can i use the knock sensor from a later motor on an '88 b230f?

it looks like it locates okay, but i don't know if i can just swap it out. (currently, some other sensor occipies that spot on the '88)
some of this comes from searching parts lists that show different items throughout the '87-'93 240's.

i would appreciate any input. the local volvo dealers are not interested in the 240 cars. even getting them to search the parts books is a struggle.
thanks