i beleive this one to be about right. its fairly new and well looked after. 183.3 bhp was most proberly a very accurate calculation if my power valve was playing up. the main thing is it made good torque at 190ft-lbs
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Astra GSi turbo
Regal Autosport Astra GSI Turbo 304 bhp 356 lb/ft
Thorney motorsport Vectra vxr 305bhp 398lbft
Now its time to build a big turbo MG ZS
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