@curtissb wrote- 'Typically the arms are narrowed 1.125 inches.'
Just to let everyone know- with the limited space between the spring plates and fenders we owners (both Speedster and Beetle) have to deal with and the range of wheel widths and offsets available there is no 'typical' or usual amount to narrow the trailing arms. You bring the bearing carrier/mounting surface in whatever distance suits your purpose. I'll be narrowing mine 5/8 or 3/4" to accommodate the fake 7" 911R wheels I had made up with the extra track of the type 3 hubs (they just fit now with my 'custom' spring plates and type 1 drums). A friend (who I think may have been the first to perform the modification) narrowed his arms 1" to fit 15x8" Fuchs with 225/50-15's and 914 discs on his bug (and they do fit inside the fenders!). Valley Autoworks' jig is set up for 1" but the website says other widths are available (more money because of increased set up time). Al
Curtis- what width wheels and tires are you using? Any pics? Come on-