Please forgive the newb question here, but this is something that I'm trying to get figured out. I've always been a performance car guy, muscle cars and hot rods, and am pretty ignorant about Customs. Never really cared much for them before, but that seems to be changing. My wife is pushing back whenever I want to take the hot rod on a long drive. After a knee replacement she never really gained back full range of movement, so it's a little hard getting it, but worse is that it hurts her leg to stay sitting in it for long periods (and she has more leg room than me, no pedals to have to deal with on her side of the cab). So I figure if we can't take the hot rod on a good long drive, then I need to get something that we can, and while considering my options I've been looking at a lot of Customs (I've been looking at a lot of things, but it seems like my eye keeps getting drawn back to Custom's, particularly from the late 40's - early 50's era, where inline 6's or 8's were common. But something I noticed is that most I've looked at seem to keep the original powerplant and column shift trans. Is it frowned on in Custom circles to swap engines? If I'm going to use the car for long drives, I'd like to have some power. I'm not talking about big block tire shredding power, but a small V8 so I can get up over Cajon Pass or the Grapevine without fighting trucks for the slow lane would be nice. So what's the deal? Tri-power 283's, or 348's or Nailhead or ? That's not a traditional Custom thing? Not looking to start a sh#t storm or anything, it's an honest question.