motor swap mount question

[kljfamily]

Hello,

1965 c10 inline 230 (Bad motor been bored over too many times)

I was finally able to source a replacement motor for my 65.

The motor is from a 1978 c10 inline 250 (Good running motor)

Forgive my lack of understanding of motor mounts but I am a bodywork guy trying to learn.

The mounts look very different. With the 78 mount sit on the stock perch? Will the 65 mounts fit the 78?

What is the best way to mount this motor?

thanks