So I've located a set of heads I can pick up for a pretty decent price for one of my many 318's. The casting # on the heads is 4343646, and I can find very little info on them. They're listed as 85-91 318 or 360 heads in the same "section" as more famous 302/308 heads. They have smog ports and appear fairly similar to the 302/308 casting, but this is just from looking at this set and then looking at my 308's at home, I didn't have a chance to do a side by side comparison so I may be off. They were assembled too so I didn't get a real good eyeball on the entire port design. Supposedly they were ordered direct from Mopar, not pulled of another vehicle, although the only info I have on the casting # looks to be your basic 318/360 truck type use.
Does anyone know anything about them? I assume they're not identical to 302/308's as they'd have the same casting #, but does anyone know what's different? Or if they're a better choice than the standard J head etc (like I feel the 302/308's are)? Maybe the predecessor to the 302/308 heads?