from Wikipedia entry:
Randall 401-XR:
Randall AMC dealership in Mesa, Arizona received AMC's endorsement to build 401 cu in (6.6 L) V8 powered Gremlins. The cars started out as 304 V8 models from the factory and after Randall's modifications would run 13.90 seconds at 103-106 miles per hour (171 km/h) in the quarter mile, for $2,995 (US$15,911 in 2015 dollars).
Known as the Randall 401-XR (X for Gremlin X, R for Randall), a total of twenty cars were built for the street and one for the strip during 1972, 1973, and 1974. Car Craft magazine tested one with some modifications and achieved 115.07 miles per hour (185 km/h) in 12.22 seconds while still remaining a "totally streetable, daily-driver".
I’m trying to imagine that much power in a Gremlin.