What does AMX Duder 343cid mean?

AMX Duder 343cid meaning in Urban Dictionary

that is a rare automobile, just stated in 1970 by American Motors; The 343 power-plant developing 250hp was a real hit with all the motorheads with this period! The cars 3 developers today live are now living in Jamaica and get a large yacht which world known online, called "The Big Fattie" which does not reflect girls getting in the watercraft, thats something directed at them while their on the boat !