8v and 16v backboxes are they the same?

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The backbox on my 1.8RSi is blowing and I've got the chance of one thats come off a 1.8 16v, would they be the same? Have bought the renault discs, but cant install them to see if there is anything on there!

 

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Yes it would fit.

 

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Thanks

 

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By the way it looks a lot better with a valver box on, with that chrome tip an all'

 

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Especially as its a 3 inch S/Steel one!!