The 308 Galil bolt is standard length with standard size lugs. It may be made of higher strength steel that regular AK bolts. The 308 Valmet and the 308 Yugo bolt use larger bolts. The 308 Galil bolt and maybe an RPK or PSL trunnion. The AKM trunnion would really be pushing things. THe PSL trunnion seems harder than most trunnions to me but it may be exactly the same. I haven't seen any factory 308 AK's use standard AKM trunnions and I have seen some of those fail in 7.62x39.