If you're looking to raise your truck, there are a few different ways to go about it. One option is to install heavier duty leaf springs. This will provide additional support and allow your truck to sit higher off the ground. There are a few things to keep in mind before taking this approach, however.
For one, heavier duty leaf springs will likely add some weight to your truck. This can affect fuel economy and performance, so it's something to consider if those are important factors for you. Additionally, you'll need to make sure that your truck's suspension is up to the task of handling the additional weight. Otherwise, you may end up with a rough ride or even damage to your suspension components.
If you're looking to raise your truck and are willing to trade off some performance and fuel economy, then installing heavier duty leaf springs is a viable option. Just be sure to do your research first and make sure your truck can handle the additional weight.