New turbos don't have the huge lag but they definitely aren't linear - in a corner you never know how much power you're going to get when you step on the throttle.
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1999 996 C2 - sold - bought back - sold for more
1997 Spec Boxster BSR #254
1979 911 SC
POC Licensed DE/TT Instructor
Would a 4 cyl T not weigh less per HP than a NA 6? And than there's the packaging advantage although a turbo in a mid-engine car is going to have additional heat issues. Torque is king...