I have a 1966 Catalina convertible with a front bench seat. I can only seem to find seat covers for a 2+2 which have bucket seats and SMS Auto Fabrics reviews are terrible.There are plenty of seat cover options for a 1966 Bonneville convertible. Are the dimensions of Bonneville and Catalina seats the same? Will Bonneville seat covers fit a Catalina? Any assistance is greatly appreciated.

The Bonneville is the upscale version of the base model Catalina. Therefore the seats and fabric will fit your car.

Original Parts Group (OPGI) or Parts Unlimited Interiors (PUI) carry interior material for your Catalina. You can also look to Ames Performance too.

Thanks Frosty. Unfortunately those vendors cater to the 2+2 that has bucket seats and I need covers for bench seats. I'll keep checking those vendors to see if they offer bench seat covers in the future.

Have you contacted this outfit?

https://www.profitautointeriors.com/products/pontiac/1966-Bonneville-Front-Split-Bench-Seat-Upholstery/3624075/66PSBB.html