Specials and prototypes.
Some highlights of this set include:
| Drwg | Title | Date | Model | Notes |
| RACT/SX0001 | Competition GT (Rootes Imp Based) Rear Engine F,A | 16/08/1964 | Competition GT | |
| RACT/SX0002 | GT4 (Imp Based) Rear Engine F,A | 16/08/1964 | GT4 | |
| RACT/SX0003 | Formula IV 1966 Chassis, Body Type 5 | Formula IV | ||
| RACT/SX0004 | Sunbeam GT V8 (Le Mans Prototype) Front Engine F,A | 28/05/1964 | Sunbeam GT V8 | |
| RACT/SX0005 | Rootes GT Prototype (Swallow Power Unit) Sheet 1 | 26/09/1963 | Rootes GT Transverse Rear Engine | |
| RACT/SX0005 | Rootes GT Prototype (Swallow Power Unit) Sheet 2 | Rootes GT Transverse Rear Engine | ||
| RACT/SX0005 | Rootes GT Prototype (Sketch) Sheet 3 | Rootes GT | ||
| RACT/SX0005 | Rootes GT Prototype (Sketch) Sheet 4 | Rootes GT | ||
| RACT/SX0006 | Swallow Engine (Dry Liner Version) Cross Section Sht1 | 01/11/1962 | Swallow Engine | |
| RACT/SX0006 | Swallow Engine (Dry Liner Version) End view Sheet 2 | Swallow Engine | ||
| RACT/SX0007 | Perpective Power Unit / Transmission Layout | 17/11/1961 | ||
| RACT/SX0008 | Engine 4 Cylinder Cross Section | 4 Cylinder Engine | ||
| RACT/SX0009 | V12 3 Litre Un-supercharged Engine | Mar-64 | V12 3Litre Engine | |
| RACT/SX0010 | V8 1600cc Engine Taken directly from 800cc Apex Parts | 14/07/1961 | V8 1600cc Engine | |
| RACT/SX0011 | Narrow Angle V8 Engine Based on 4 Cylinder Aluminium Engine Range | 06/02/1964 | V8 Engine | |
| RACT/SX0012 | Twin Cam and Big Valve Single Cam on 1995 cc 3.612 Bore x 2.97 Stroke | Jun-63 | ||
| RACT/SX0013 | 4 Cylinder inclined Twin Cam CD Card M35 Starter Sheet 1 | 28/03/1962 | Swallow Swift 4 Cyl Twin Cam | |
| RACT/SX0013 | General Layout of Power Unit plus Ancillaries Sheet 2 | 02/04/1962 | Swallow Swift 4 Cyl Twin Cam | |
| RACT/SX0014 | Engine Transmission Layout V8 | 08/11/1961 | Swallow Swift V8 | |
| RACT/SX0015 | Engine Transmission Layout V8 | 10/10/1961 | Swallow Swift V8 |
Tubes Listed by Model