If you skip, the app falls back to Houston, TX defaults. That means we can't give you accurate:
You can change your mind any time from the build sheet.
You can't leave for the dyno without flashable hardware. We have full assist data for the brands shown clear; greyed-out brands are coming soon (different software ecosystems take real R&D to support properly).
Pick parts that fit the build. Stock is the default everywhere — leave anything alone you don't want to change.
Pick a category to see what fits this engine. Want a recommendation? Ask me directly — I'll match parts to your generation, your ZIP for price, and your goal.