swapping 430 for a 455...will it fit?

Im swapping a 68 buick 430 out of my 68 riviera and adding a 455 that came out of a 1972 buick centerion...Now i know they will fit but do i need to change the engine and tranny brackets or does the 72 455 bolt right into my 68 riviera?

thanks

you might need to swap oil pans and pickup tubes from the 430 to the 455. the Centurion was Rear sump, the Riv might be Center sump.

i think the rest of the mounting brackets will be good.