I don't know if bigger, I could only find pictures of the smaller ones. I guess I could go for lunch and have a gander. Is your need urgent?
I've taken a hiatus from slotcars I just wandered on here as yesterday as I was in what North Americans would call a funk, and I saw your name. The little painting I've done and what my neighbour does has been with "normal" household acrylic primer surfacer as it is only about $3.00 a can!
EDIT: Lynne. Also Mr. Hobby - Mr.Base White 1000 comes in 40ml jars and we think larger sizes. Have a look on the web they also have different numbers 800,600. Needs special thinner. Primer here is $5 for 40 ml.