Honda only sold the Element with a 2.4 L K24 inline-four and if you want more power then it’s either boost or more displacement. For those that prefer displacement Mini Tec is working on a swap kit to install a J30 or J35 V6. The kit will include an adapter plate, engine mounts, and some other components. You can get a sense of quality and price range by viewing their Miata swap kit.
Source: Mini Tec