84 b2000. Whats a good engine swap????

Hey everyone goin on a year of owning my 84 b2000 and im wantin to put some fresh ponies under the hood. just wondering what would be a good swap for an engine and any info on it would be awsome. thanks.

If you can get 150hp out of the stock engine, you will be happy. That is what I am doing.

yeah im toyin with the idea of a ford 5.0.