Mopars in the Wild

jaws said

I think it was a 350 in 58, then went to 361 in 59.

Click to expand...

According to Popular Mechanics, February 1958, both engines were introduced in the 1958 models.The 350 was optional on Plymouth and Dodge and standard on De Soto Firesweep. The 361 was used on De Soto Firedome and Fireflite.