I think they are anyway.
A little more research probably required than my say so!
Don't forget though that with extra displacement, you'll need more fuel or it'll spend half it's life pinging, leaving you back to square one.
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XC90 V8 Exec, C70 2.4T Convertible, S70 T5 CD, 850 TDI, 2 x Escort vans and a 2.8i Capri.
Clearout has begun, but must continue!
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