Q&A for How to Build a Rat Rod

That depends entirely on your budget, but a common goal is to keep it under $3,000.

Of course you could! Many trucks and cars of old came with V10 and V12. You could also just completely build your own frame.

Yes, however, some frames look weird and clunky inside a rat rod, unless they are heavily modified to fit. Also, you need to make sure that your frame is strong enough to support the power generated by the engine. A large blown motor on a Miata frame for example, can twist it and destroy your ride.

GMC and Chevy vans of that era have a body-on-frame construction (separate bodies and chassis).