This is the specification we eventually settled on:

Roadsport 140

Ballistic Orange

Black Pack

SV Chassis

Lowered Floors

Superlight Suspension Package

15″ Anthracite Wheels / Avon CR500 Tyres (7″)

Black Aluminium Aero Fuel Cap

Push Button Start

Leather Adjustable Seats

Side Screen Armrests

Momo Steering Wheel / Quick Release Column

12 volt Power Socket

Race Harnesses