SS90 bannana not fitting well

I have some genuine old stock Banana exhaust and manifold, but when fitted to the engine the pipe sits too low and the bracket on the pipe miss's the engine support sits too low.

My only thought is that the parts are either for a Primavera or from a SS50 or are a mix.

I don't have the original part numbers so I can't check on spare parts catalogue for a SS90.

Any ideas, should I just cut the manifold and weld to the right height?