[Christ]

MK1 and MK2 have basically interchangeable front emd parts I think... There's an MK2 'big bumper' that works better as an air dam than the stock stamped unit. I ran my 1.6 with no rad fan and a grille block in all temps, never had a problem with it, just don't let it idle for more than maybe 20 min (if you do that sort of thing). The stock exhaust makes the engine fairly anemic, its max torque and overall curve is something like the gasser, but with less AUC (area under curve). Probably the single best thing you could do for MPG and a slight boost in power is add a non-vnt turbo and manifold from an ALH TDi, 2.5" turbo back open exhaust, and actuate the wastegate at no more than 4psi. Adjust your IP till you get a little gray smoke under load, then back it off slightly, and concentrate on staying between 1800-2400 rpm.

The idea is that while diesel engines don't 'produce vacuum', they still draw in the air charge under vacuum and this requires energy that would otherwise go into the piston and rotating assembly. The turbo will use exhaust heat to keep the piston faces from seeing as much vacuum, thus increasing efficiency. Technically no need to adjust your fueling calibration with the turbo, but if you're gonna add one, might as welll get the power boost from it, too.