You can try and see if you can snake your old parts out - backwards - remove the one with the damaged end first - then see if you can push the other around and out - that will tell you if the spot welded end will fit between the case and the front clutch drum. If it does then you should be able to install the new band. Whichever end is shorter on the new band is the end you want to install first.
I think the small boxes are a little tighter inside.
