as you are probably aware, there's a 1/2 inch difference between the 308 and the 06- that alone counts for most of the non- interchangeability between the two rifles-longer receiver, bolt, etc- that alone dictates a different trigger group-certain parts may be modified by clipping or modifying, but these are indeed few- about the closest garand m14 hybrid you'll see will be one of the "gestation " models with a garand top end modified to take a bar magazine- other than that- it's a lost cause- or a bm59