Chevrolet El Caminos are still seen in Stock. Here's a less common, but still beautiful example of a 1960 model:
There are a good number of engine combinations for this car. There is also sometimes a difference between the manual and automatic classes due to a large difference in factors..
235/135(135): V/S,V/SA
283/170(175): T~U/S,T~U/SA
283/230(215): O~Q/S, P~R/SA
348/250(250): M~O/S, N~P/SA
348/280(280): J~L/S, K~M/SA
348/305(305): H~J/SA auto only
348/320(320): G~I/S manual only
Source: http://www.classracerinfo.com/