How do slants fit in righthand drive cars?

It was my understanding they have use a 6cyl in line hemi engine on right hand drive cars. The slant six is not used down under or across the pond.

so my question from the OP is on the cars we have seen on this web site from overseas with right hand drive v8 (recently the 318 barracudas a few weeks ago) do they use different exhaust manifolds?