Unless you cut the injector harness (not recommended), you will at least need to remove the upper half of the intake manifold. If you try the search feature on the upper right corner I'm sure you'll find the answers you seek. Here's a few that come up, and there are many more. Tim

https://www.toyotavantech.com/forum/...d-four-y-block

https://www.toyotavantech.com/forum/...asket+manifold

https://www.toyotavantech.com/forum/...asket+manifold