Post #3 is mostly correct. The last Valiant model made here was the CM, it succeeded the CL. The first model to have a V8 [ 273 ] was the AP-6, intro in March 65. All models that followed were available with the V8 small block. So if you have one of these, it has the V8 K member. I am pretty certain the LHD K member was used, but not 100%.