The reference points used to generate that 913mm measurement are tricky to replicate in practice. If you look closely at the small sectional drawing of the front shock tower, you'll see that the 'A' point actually lies on the plane defined by the underside of the shock tower cap. You can't measure at this plane unless you remove both front struts and then use either a trammel bar or a plumb laser. So, instead, you have to measure across the tops of the shock tower caps. But... Not so apparent from the sectional drawing, but very clear to the naked eye, is that the shock tower cap has a lip on the top (this is a little more evident in the sectional drawing of the rear shock tower that appears on the right side of FSM Dwg. BF-3). The top of this lip sits (by my measurement) 13mm above the bottom (reference) surface of the cap. So when you take the 13.5-degree cant of the front strut into account, it means that if you measure the A-A distance at the top of the lip, the result it will be somewhat less than if you were measuring at the (intended) bottom surface of the cap. My calculator says that 'somewhat less' = 7mm, so a measurement of A-A taken across the top of the lips should be 906mm. Now, if you left the press-in black plastic trim buttons in place (did you?) and took your measurement across the top of the buttons, you'll be measuring at a plane that's even higher above bottom (reference) surface of the shock tower cap. 906mm will shrink to ~ 902mm (est). Also: It's difficult to make this measurement accurately with a steel rule or (worse still) a tape measure. The correct way is to use a trammel bar*. If you used a steel rule or tape measure, your measurement accuracy will be no better than plus/minus 1mm (and more likely only plus/minus 2mm). * You can make your own single-purpose trammel bar. Start with a 4-ft (1219mm) length of 1" x 2" lumber and two 6-inch lengths of straightened 0.032" wire. Drill a slightly undersized hole into the flat side of each end of the wood strip (drill all the way through) and then press the wire lengths into the holes. The holes should be about 900mm apart. Now, using 1-qt paint cans sitting on each front fender, support the wood strip (your 'trammel bar') above and across the shock towers. Adjust the projecting length of the wires as required. Then line up the tip of the LHS wire with the centre of the LHS shock tower trim button. Then -- taking care not to disturb the trammel bar -- bend the RHS wire until its tip aligns with the centre of the RHS shock tower trim button (you may need to go back and forth a bit, until you're satisfied that both wire tips are correctly aligned with the centres of the trim buttons). To get your final measurement, transfer the paint cans and the trammel bar to your shop bench (don't disturb the wires!). Then position a steel rule on the bench top so that it sits under the wire pointers and take your measurement.