oil pan, timing cover, and water pump will directly swap onto a 5.0 block.... you'll have to change the oil pickup tube to a front sump pan pickup, which shouldn't be a problem.... the fuel pump will work fine because of your timing cover, you'll have to put your eccentric from your 289 on the 5.0 though cause they dont have one of course..... the cam in the 5.0 shortblocks also are actually pretty peppy.... you would probably be satisfied leaving that how it is, putting some roller lifters in and have a full roller setup....