No need in extending your Mini for this swap. This kit allows you to fit the Honda D-Series engine into your Mini without any external body modifications. The MTD Series was designed to install Honda’s D Series SOHC engines into the Classic Mini (1959-2000), upgrading the Classic Minis A-Series engine with today’s most trusted engines built by Honda. With four times the horsepower of a stock Mini 850 and a thousand times the reliability, you might realize the reason for the swap. Reliability and knowing that your car will run in any condition is a great feeling to have everyday. Have fun with your Classic Mini.