Have a 2.0i DOHC 4x4 Sierra estate, and intend to fit a Cosworth 24V BOA V6.

The engine will be standard to start with, so what sort of performance figures can I expect?

Will have 0.75 fifth gear and 3.62 gears, cats will have to stay as it's a late '92 car. Will use Cosworth 4x4 exhaust system.

0-60 mph?
0-100mph?
standing quarter ET and terminal speed?

What effect would BOB cams have and are they worth the hassle of fitting?

Apart from a good air filter, are there any other cheap tuning tricks?