I have a chance to buy a set of original 1960's vintage Torque Thrust wheels at a very low price.

Seller says they are "the large style GM bolt pattern". I have never heard of this. Is there such a thing?

They are probably 5 on 5 which is 5 lug on a 5 inch circle and were used on big GM cars. The only Chevrolets I am aware of that used these were half ton pickups in the 80's and 90's. If they won't work for you let me know the details as I am looking for a set of 5 on 5 wheels for my sons pickup.

Big cars like Caprices and such used 5x5