Yes, Nitrous Oxide systems, for example, really have no effect on the engine or driveability, until the system is in use. Granted, if you prep an engine for nitrous, you want pistons made of materials that can withstand the extra pressure and heat, and the ring gaps are wider, and the rest of the engine has to support the forces exerted on it by the "juice". But none of that affects the ride like the direction I'm going in, which is all of the typical "hot rodding" stuff. There is at least one aspect I'm building in to my stroker motor that will allow for less wear and tear and stress on my valvetrain, and that is larger than "usual" displacement. Since the block doesn't have to be clearanced for a 4.50 stroke or shorter, and the aluminum block is available in a 4.49 bore with .070 left to go, I am leaning towards a 4.25 stroke or 541 total displacement. I don't want to go as big as possible because of my intake options, but I am already going to be at the top end or beyond my power goals and what the rest of my car can handle.
So in its own way, it will be a formidable "street" car, but on the "easy" end of what the block can handle, which brings peace of mind and hopefully longevity and minimal maintenance.