Do the 10 inch drums fit in 13 inch wheels? I have my 273 4BBl, 4Spd in storage (and have not driven it since 1987) but will check the measurements when I pull the tires for some repairs (currently soaking the cylinders to try to get it started after all this time ) . In the dim recesses of my memory my dad said the discs and the bigger drums did not come on 13 inch wheel cars, so i just thought we had the 9 inch drums.