thanks mike, if they only come with the knuckle couplers is there a good site where i can buy the rapidos and convert them myself, thanks again i appreciate any help, looking forward to the new hobby

hello im new to N scale i inherited a ton of atlas freight cars with the old rapido couplers, looking to buy the 2 8 0 consolidated, 4 8 4 j northern and 4 8 2 mountain i was wondering if they all would have the rapido couplers, thanks much