440 or built 360 71 demon

I have often thought of going big block in my dart. But then I start looking at cost not so much for the engine but everything to make it fit. 800.00 headers, 200.00 mounts, 350.00 driveshaft, radiator,and so on. By the time I build a big block and buy all the parts to make it work I can build a strong stroker small block that fits in my car much better and weights less.