Parts Compatibility Checker for DIY Van Conversions

Van life is experiencing a massive surge. Thousands of people are leaving their careers behind, scooping up used Sprinters and Transits, and converting them into mobile tiny homes. But there's an ugly truth the community rarely addresses: a single incompatible part can completely torpedo your entire project. You spend $400 on an alternator that won't mate with your engine. You grab an $800 inverter that buckles under your electrical demands. You pick a solar charge controller that refuses to play nice with your battery bank. Just like that, you've wasted $1,500, you're drowning in return shipments, and your carefully planned build schedule is destroyed. VanFit is the compatibility engine that kills these disasters before they happen. You enter your van's year, make, and model along with your build specifications — solar array, electrical layout, heating system, whatever you're putting in. The platform immediately cross-checks thousands of components and highlights anything that won't work together. Think of it as having a seasoned van conversion veteran peering over your shoulder right before you click "buy now" on Amazon. Beyond flagging problems, it recommends proven alternatives, explains precisely why they're the right fit, and links you to trusted suppliers who actually carry dedicated van conversion components — not just generic RV gear that kind of gets the job done. Pricing starts at $29/month for unlimited compatibility scans, curated part suggestions, and full supplier network access. Dedicated builders tackling custom electrical work or engine modifications can upgrade to a $99/month plan that includes one-on-one guidance and priority access to real van conversion specialists. The frustration here is palpable and constant. DIYers routinely waste $200-500 on mismatched components. Facebook groups and Reddit forums overflow daily with desperate posts like "I just dropped $600 on the wrong alternator, someone please help." Launch with a web-based tool that taps into automotive compatibility databases while layering in community-contributed data from verified successful builds. Users create a van profile and build blueprint, then run instant compatibility checks against any component they're eyeing. Develop a lightweight Chrome extension that surfaces incompatibility warnings directly on Amazon, eBay, and specialty supplier pages. Recruit 50-100 initial users from Reddit by personally resolving their specific compatibility headaches at no cost. Use that hands-on experience to discover which questions actually matter most. With 2,000 subscribers paying an average of $50/month across the blended $29 and $99 tiers, you hit $1.2M ARR. That's entirely realistic. The van conversion world is remarkably interconnected, and solutions to genuine problems travel through it like wildfire. Each averted purchasing mistake generates fierce loyalty. Each completed build turns into a walking, driving testimonial.