Guys,
I think you'll find that the two larger scale cars are the two Can-Am cars BRM & March which Dave did I believe to match the the short lived MG Vanquish ranges scale i.e. 1/28th. I have built a fair few of his 1/32nd shells up and as Eddie rightly says all are within compliance of the 1/32nd scale +/- 2mm tolerance allowed in most historic type slot meetings. True AA Bodies like Betta & Classic take a bit more effort to prep and paint and for racing you have to dremmel out a fair bit of weight but they are significantly cheaper than many other resin shells, very robust being fibreglass rather than just resin, and cover many historic cars we just wouldn't see otherwise.
For example how many slot body manufacturers would do the 1955 Frazer-Nash Sebring? This is one I knocked up in 4 days for the recent MRE Pre-60 Le Mans Classic at Wolves it is perfect to scale compared to the official dimensions for the real car and scored decent points from the concours judges so it wasn't too shabby allowing for the quick build time.
If you want an Easy to build shelf queen then maybe these arent for you but if you are prepared to put in a bit of effort they can be very rewarding and Dave Yerbury is a great bloke and I've always found him a pleasure to deal with and gives prompt helpful, service.
Cheers
Phil