my friend has a 1973 skidoo elan 250 just like yours. i love them because when u get them stuck u can just pick them up and move them. He never greases his bogies and they always work fine. He gave me a sled for a extra wankel rotary engine i had. I have a 1973 skidoo elan 300cc! it has slider suspension off a different sled! if you need a parts sled or even just parts my frend has a vintage snowmobile graveyard!