I would have guessed that being a tin woodie, but details certainly help. TW, I think you just need to figure out how many of each size clips and order a range of them. That is what I have done in the past. Sometimes I get lucky. Sometimes I have to order more due to incorrect size. On a mid-50's Buick, they are all kinda sorta similar. Just different sizes. The kinda sorta does not apply to 53 Skylarks from what I have heard, but I don't recall hearing about any 53 Skylark Wagons.