318/360 production info

LA motors were made from 64 to 92. 318 will drop right in. What year is your car? As mentioned you will either have to have weights welded to your converter or a weighted flex plate installed for a 360.

One thing that is generally a non issue but something to be aware of is the hub on your torque converter is smaller than a 360 or 318. It won't self center. Also Motor mount brackets are different on left side I believe for 340 360 engines. Can be worked around easily though