The first several AMT model car kits were 3 in 1 with a hot rod engine option along with the stock engine appropriate for the car. Here's a list from memory . just the optional engines in each kit : '32 Coupe - poor rendition of a Chevy small block '32 Roadster - Early HEMI '32 Vicky - 427 Ford FE '32 Phaeton - 427 Ford FE '36 Coupe - Pontiac V8 '39 / '40 two door sedan- ??? '40 Coupe - Buick Nailhead '40 Sedan Delivery - Buick Nailhead '32 Two Door sedan / XR6 - Custom Buick Nailhead Now, I do remember an Olds with two Four barrels, in something. Any ideas ?