Most if not all aftermarket wheels will clear the calipers on normal disc brake conversions. CPP is not the final word on this issue. Many aftermarket brake kit suppliers can provide kits for any wheel you prefer. I installed a conversion on a 62 Impala using the stock 14" wheels. I also did a 55 Cameo using the stock 6 lug 15" wheels. You just have to specify what you want to do. If a supplier can't tell what will fit it's because they just push parts across the counter and have no experience with the mechanical process.
Fred


1956 3100 Pickup/Red/350/3sp OD/PS/Disc Brakes
1957 Bel Air Sport Coupe/Red/355/TH350/PS/Disc Brakes
2017 Silverado LT Single Cab SB/Black/5.3/6 Speed Trans
1947 Willys CJ2A w/F-Head engine