Estimate your total build cost by category. Values are saved automatically.
Enter values and press Calculate.
Enter your estimated spend per category and the planner totals everything up. Values save automatically in your browser — you can return to update them as your build progresses.
Costs vary significantly by condition, country, and whether you do the work yourself. A realistic M43→M50 swap budget for a running result starts around €3,000–4,000 for parts alone (engine, gearbox, prop shaft, cooling, loom, ECU) and rises quickly if the donor engine needs rebuild work. Suspension refreshes run €600–1,200 for quality OEM-spec components. Sound deadening and interior work are often underestimated — a proper CLD + foam treatment for floors, firewall, doors, and trunk typically costs €300–500 in materials.
Split your budget into phases to avoid stalling the build mid-way. Engine and drivetrain first, then chassis and suspension, then cosmetics. Trying to do everything simultaneously is how projects sit incomplete for years.