Loosing boost isn't too much of an issue to me, a gear box with a wider range will allow me to fab taller gears into the rear end, but give a wide enough range to provide performance in the lower gears and economy in the higher ones.

Pros > cons in my book. And beside that, it'll give me an excuse to install a pointless blow-off valve to scare ricers.

__________________
Vehicles:
2002 SLK 230
Gone but not forgotten:
1983 300D
1981 El Camino 'OILBRNR' - 6.2L diesel
OM617 powered '86 F150
1984 BMW 524td
2001 VW Beetle TDI
1994 Sunurban 4x4 6.5L diesel