I have seen labor class from Goa even booking in tatkal 2AC in 12741. I had the opportunity to speak to some Bihari wholesale clothing owners at Madgaon and they told me they always go for AC travel in 12741/42 as SL coaches are too crowded and once their belongings was stolen in the train.
Even 12741/42 CC should be changed only 4 AC coaches for a 2000+ kms travelling train that too in hot climate is too bad. Atleast 3 SL and 1 GS should be replaced with 4 third AC coaches and additionally a pantry car should be added too.