Cheap Parts
Besides the fact that brand-new parts are affordable, ’80s muscle car owners know that they can source many of the components from junkyards for far less money. Take the Fox-body Mustangs for example. Those cars are just one of 15 Ford models built on the same platform, so lots of Ford, Lincoln, and Mercury models have interchangeable parts (via Hagerty).
Also, the fourth-generation Mustang, known as the SN95 model, uses the modified Fox platform so that you can swap many things from later Mustangs. If you want more power for your 5.0-liter V8, for example, look for cylinder heads from old Ford Explored, which are cheap. There are numerous examples of mixing and matching parts from other Ford vehicles and making your Fox Mustang faster for a few bucks. The same goes for GM muscle cars as well.