Dropping 318 LA engine in 62 B body

My 62 will have a 63-5 v8 K member and a 318 LA motor not a poly.
I had traded for a 64 more door Belvedere for the good running engine but the car had new floor pans and was so solid I decided to keep it all together and finish it and drop my LA SB in my 62 Dart B body.
My only A body now is the 62 Lancer the wife claims and it will be finished up this winter sometime, with a slant back in, floor shift, and a color change.