I didn't see any other threads covering this so forgive me if it's a repost. Given how often the Speed3 swap comes up when talking about the Mazda5, this should be rather encouraging.
From "The Rise of the Giant-Killers" "2010 Mazdaspeed5 One Lap has some history with fast minivans. A few years ago, a group of Honda employees were regular attendees with a built, turbocharged Odyssey. Honda canceled the program last year, but a Mazda dealer is continuing the trend.
The Mazdaspeed5 is a creation of Autobahn Mazda of Countryside. The technicians there removed the drivetrain from a wrecked 2008 Mazdaspeed3 and implanted it into a new Mazda5 with the requisite go-fast modifications. Team members Richard Fisher and Jason Saini tell us it's a surprisingly easy bolt-in process. Out the van went everything past the front seats; it's stripped and caged and very fast.
The Mazda5 competes in an SUV and truck class against a F-150 Lightning, a Ram SRT-10, and a stock X6 M driven by BMW driving instructor Mike Renner. Understandably, the Mazda is the fastest of that group, but today at Mid-America it was eighth fastest in the first round, 13th in the second. That's on par with one Corvette Z06 and an Ultima GTR. "
