I have a Weber 32/36 on my 2.6, which is basically stock. From what I remember on the carb website, a 32/36 is fine for a stock motor, don't really have to mess with the fuel system (fuel pump, regulator, etc). With a modded motor, a 38 is recommended, along with some fuel system upgrades.

Regardless of which carb you get, the Webers seem to be pretty sensitive to their fuel/air and idle settings. Mine will diesel on occasion, and usually a 1/8th turn on the idle set screw will more or less fix it, along with some mid-grade gas.



1989 Monty SWB, 2.6L w/MT, 15" alloys, 265/75 Dunlop Radial rovers, rear air shocks, Weber 32/36, SQ oil cooler, (SOLD Oct 2012)
Southeast VA, USA