3-4” max. A type3 front end track width is 1310mm (51.6”), Type2 front end is 1370mm (53.9”) so you will be 2.3” narrowed. A 66-74 T3 front end is a cheap way to get to Porsche 130 PCD. Just buy conversion rotors.
@@DUBFAB My TDI splitty bus LISBETH was literally built around my 19x11 Porsche Carrera Lobstah Clah wheels wrapped in 305 TOYO rubber and mounted to a 951 turbo rear torsion beam narrowed a full 5" with tubbed out rear wheel wells. It has taken me MANY years to build this machine working on and off with full MK4 electrical systems. I have shared it extensively on the Zuckerberg MATRIX but not yet on RU-vid. I love your machine.