From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Numbered list of vehicle modifications and features with associated scheme or part numbers.
| Identifier | ExFiles\Box 82\2\ scan0014 | |
| Date | 20th February 1934 | |
| - 2 - E/Lid.{A. J. Lidsey}1/HP.20.2.34. (8) Outside petrol tank filler. N. Sch.3929. (9) Petrol tank anchorage modified to allow tank to be removed without first removing the rear road springs - N. Sch.3945. (10) Dropped front crossmember - head lamp pillars outside frame - RR. Sch.614. (11) Battery boxx crossmember moved back for increased rear seating capacity - EV.{Ivan Evernden - coachwork}S.116. (12) Strengthened wing stays RR. Sch.577. (13) Firth's road springs with rolled eyes. (14) Metal mud excluders for steering joints - N. Sch's 3845, 3848, 3963. (15) Improved stop lamp switch RR. Sch.580. (16) Sheet metal floorboards - Lec.3707,3690,3691,3781. (17) Fabric bonnet rest on dashboard in place of rubber - RR. Sch.572. (18) Improved undershields to keep out mud and water - Scheme required. (19) Spring loaded spherical bearing for pedal shaft in gear box to cure clutch pedal vibrations - N. Sch.3960. (20) Lucas stop and tail lamp. (21) Side spare wheel carrier on offside N. Sch.3720/1. (22) Sheet steel wheel arches - made by RR. (23) Sheet steel wells for rear passengers feet - made by RR. (24) Fog lamp on front horn (EV.{Ivan Evernden - coachwork}1/1H.30.1.34). (25) Individual adjustment of shock dampers - N. Sch.3941. (26) Strengthened connection of front dampers to frame N. Sch.3972. (27) Strengthened shock damper casings - N. Sch.3975. | ||