My favorite years are 1978(but I am Biased),1970(Again Biased),And late 80's-91 FI models!Oh yeah my 78' is an original Arizona Truck w/o any emissions crap(no cats,no egr,ect,).It is my understanding that in 78' 4x4 models were emissions exempt.I previously owned a 1976 2wd Chevy scottsdale 350/t-350 Smog Mobile!I love workin' on my 78' as it is virtually the same engine that was in th 73' Nova ss I once owned!Yee-Haw!!