Considering creating a '67 Impala COPO what if, suggestions?

[jbailly]

Hi guys,
First post here so bear with me. I recently inherited my Dad's '67 4 door sport sedan Impala 275 horse 327 with a Powerglide. The car was parked for 40 years and I just recently got it back on the road. While it's a colossal survivor it has next to zero collector value, so I was considering a tribute to the COPO cars. Now as far as I know there were no COPO Impala's? So I want to do a what if, I was thinking a 4 door version of an SS 427 with a 4 speed, but look factory possible. I'm not too concerned with date correct blocks or transmissions, but it won't have a W block either or an LS. Maybe I should look for another car with more than 34,000 miles.