Attachments JS26 walk behind mower rear bagging options?

[Gta_g20]

Hi guys I recently picked up a js26 and a JS63c from a guy who went into larger machines. The mower however didn’t come with a mulch plug nor a bag. I’m wondering if I can use a bag from another mower possibly as these bags don’t seem common. Ive heard these mowers were manufactured by Murray. Would I be able to say use a Murray rear bag from say. Mid 2000 mower? Would it also need to be a self propelled model also? Just curious. Any help is appreciated thanks in advance