anything is possible. i had an 87 caprice cop car that had the original 350 in it. when i went looking for parts at the chevy dealer, the 350 wasn't listed as being available in 87. they had to pull out a special book to find my part-which was a distributor cap-the same as a 305, but the idiot behind the counter swore they were different..
anyhow,maybe it is a special order type thing- did they make camaro cop cars then? maybe it was a dealer thing? maybe it is a 305 and the guy thinks it is a 350- i have seen that a lot..
1971 Nova(looks like 69 camaro from underneath!)
355sb, vortec heads, HOT cam,T-10 tranny, 3.70 gears 16" IROC wheels