Thanks OldManMopar. They are definitely the 73+ ball joints as I put them in myself. Originally I ordered them for a 67 and that's when I discovered the suspension was something newer and found the 73 e body ball joints fit. This is probably for another thread, but if it was originally a slant six car would they have had to put a new k member in to accommodate the 340? If so would that require a new steering system? Any way to tell the 67 idler arm vs 68/69 and would it fit right up? My apologies as I'm not a pro at this like y'all on the thread! I enjoy doing the work but have more questions than answers and genuinely appreciate everyone taking time to explain these things to me!