Adrian,
It might at one time have been DSLs engine, but it has obviously been downgraded to a great extent since then 😬.
It no longer has the roller barrels and so that makes a huge difference, as well as having to make do with some sort of feeble aftermarket ecu now. I think I will be very lucky to get anyway near the BHP limit, so you can leave your wig in its box - unless of course it is used for 'dressing up' at home. I have heard about those sort of things 😬 😬
Mike