Built between 1968 and 1970, the AMX by the American Motors Corporation is an oddity of the muscle car era, but that didn’t stop Jimi Day from building such a car into a pro-touring beast. This isn’t just any built AMX, however. In fact, this is the very same D&Z Customs-built AMX that competed in the Optima Ultimate Street Car Invitational last year. Set up with a customized Heidts’ Pro G front suspension system, this car makes a fool out of anyone willing to second-guess it’s handling capabilities and might just make a believer in the AMX out of you after all. Check it out in the latest episode of Big Muscle above.

Built by D&Z Customs for Day last year, this 1969 AMX dubbed AMXess is far from your typical AMC. Although it maintains all its original body panels and glass, this pro-touring monster has quite a few surprises up its sleeve, including a modified GM Performance Parts LS3 under the hood good for about 550hp, a Keisler RS600 transmission, 6-piston manual Wilwood brakes and Rushforth Night Train wheels wrapped in Falken rubber. But no upgrade is as important to a pro-touring vehicle as the suspension.

That’s where Heidts’ quality line of products come in. Underneath AMXess, you’ll find a custom Heidts Pro G front suspension system backed by Ridetech Triple Adjustable Coilovers, and a D&Z Customs custom 4-link rear suspension matched to a Ford 9-inch rearend. This suspensions setup is what makes Day’s AMX a true pavement gripping machine- enough so to make it right at home on the street, autocross course and track with little adjustment. The proof is in the raw cornering power this car has.

With Day’s focus on efficiency and availability of parts for his AMX build, he couldn’t have picked a better suspension setup than the custom Heidts Pro G system he runs. Lucky for you, Heidts produces their Pro G suspension system for many American muscle brands and models, so check them out on Heidts.com.