Need info on olds 455 into chevy truck

[1978skeens]

I want to swap my sb chevy 350 to a 455 olds. My truck is 1978 C-10 swb, I know you can use the diesel motor mount pads from napa from the 350 olds diesel. It drops in with BOP trans but what about crossmembers for trans. In my 1967 chevy C-10 I built a Buick 455/462ci with all the goodies! It was fast and the motor only weighs 60 pounds more than a sb chevy same as the olds. the buick motor was more cutting and welding. please any info or pics would be great! thanks