Oil pan hitting the k frame

So I have a slant six and 63 valiant and I can't get the passenger side mount to seat, so when i looked from under the car, the pan hitting the k frame.

Were there different k frames for 170 vs. 225??

The car originally had a 170 which was long gone before I bought the car and this is a 225 I'm trying to fit in there.

20200628_195308.jpg

20200628_195341.jpg