Welcome to Building The Legend
From small beginnings in Coventry, England, engineer Neville Swales and his team have been quietly creating meticulously engineered cars. Their first completed car - a re-creation of the sublime 1966 Jaguar X J 13 Le-Mans Prototype - was a finalist in the 2016 International Historic Motoring Awards, standing shoulder-to-shoulder against such icons as the 1966 Le Mans-winning Ford GT40 and the 1956 Le Mans winning Ecurie Ecosse Jaguar D-Type.
At the heart of each exclusive car is their own unique tera® "quad-cam" V12, inspired by the Ferrari, Jaguar, Tatra and Lamborghini V 12s that screamed around the Le Mans circuit throughout the 1960s.
As featured on the Jay Leno YouTube Channel
Featured products
6.4 litre Jaguar V12 Billet Crankshaft
Suitable for 6-litre Jaguar V12 block. Increases to 6.4-litres. We can also supply everything you need to stretch your engine to 7.3-litres. Call for details. For later blocks with lip-seals. Call for shipping price.
£7,350.00 excl tax £9,350.00 excl tax
XJ13 Toolroom Copy
1966 Jaguar XJ13 Le Mans Prototype as it first left the Competition Department – as Malcolm Sayer envisaged it - before it was crashed at MIRA and rebuilt in 1972/73. Prices ex-works. CAN BE SECURED WITH A MODEST "GOOD FAITH" DEPOSIT - SEE BELOW
£575,000.00 excl tax £675,000.00 excl tax
"tera" quad-cam V12 crate engine
Hot-tested, warranted engine. PRICE SHOWN IS FOR 6.1-LITRE.
£75,000.00 excl tax £125,000.00 excl tax
News
16 Sep 2025
FOR SALE - 1973 Jaguar E-Type V12/4-cam
The ultimate expression of the E-Type by Building The Legend Limited. A Coombs tribute in pearl grey with 9 WPD registration to match.
28 Aug 2025
Amazing offer! - 7.3-litre tera quad-cam
7.3-litre tera quad-cam crate engine 50% reduction off advertised price. Be quick to secure this one-off deal!
Latest From Blog
24 Sep 2025 Read More
LM69 - What if?
If you scan through reports, analyses and tests, Jaguar clearly had two cars in its sights – Ferrari’s 330 P3 and Ford’s GT40. In 1964 their eyes will have been on a 1966 Le Mans debut for a team o...
28 Jun 2024 Read More
NEW - custom conrods
Really happy with these Coventry-made custom tera conrods...
28 Jun 2024 Read More
The man who brewed up Jaguar’s lost V12
Swales is CEO of Coventry-based Building The Legend, from which he now offers the so-called 1966 Le Mans Prototype and E-Type Reimagined models, powered by his version of the lost Jaguar V12, known as...
28 Jun 2024 Read More
The ride of your life
Harry Advic of ABODE2 magazine takes a spin in a re-imagined V12 Jaguar E-Type created by Building The Legend CEO & Founder, Neville Swales...