Since I was working with E-4 and E-6 processes at the time I rarely shot any kind of Kodachrome, nor did I need the PK-series envelopes, I was mistaken about the ESP-1 add on but there were places that pushed Kodachrome back in the day (way back ten years ago!) From a photo.net post:
Peter Lawrence
, Oct 10, 2006; 06:17 a.m.
From Kodak's website:
"KODACHROME 200 Film can be push-processed to gain film speed or compensate for underexposure. Before exposing your film, contact the lab where your film will be processed to discuss the push-processing levels they offer and the associated charges. Be sure to mark your film container with the EI number used and inform the lab that you want the appropriate push processing.
When the film is push processed, the color balance will shift in the magenta-red direction, compensating for some of the greenish artificial illumination present in most stadiums and other large facilities.
We do not recommend push processing of KODACHROME 64 Film."
So, yes, you can push Kodachrome 200, but there will be a shift in its color balance.
I can personally attest that when
Kodachrome film goes through a C-41
Kodacolor film processor only bad things happen, the emulsion melts all over the rollers and the poor, overworked and underpaid One-Hour lab manager (your's truly) had to call "time out" and pull the developer rack, clean it, drain the developer tank, replace the developer, and bring the machine back up to temp whilst all the while people are jumping up and down waiting for their fast prints of their dog or whatever. Very frustrating and a constant training issue at the store.