A good start?

krazykuda said
The 318 pickup tube will work, but the oil pan won't. I would buy a new pickup tube from Napa, they are like $17.

You can buy a pan from Summit.

The oil pan on most trucks and cars are different to the tune of one being a center pickup and the other being a front pickup. I cant say for sure on a '74, but if its like other trucks you'll need a pickup tube also. Check ebay, pans and pickup tubes are plentiful