 Additionally, the new "Yenko Deuce", as it was known, had extensive suspension, transmission, and rear axle upgrades along with some very lively stripes, badges, and interior decals.A bit later in the decade, Yenko began to modify the Chevrolet Vega with spoilers, turbochargers, and design graphics, dubbing it the "Yenko Stinger II".Due to difficulties with United States Environmental Protection Agency certification, he only sold the modified Vega without a turbocharger.