I love the Crf500l builds but as others have noted I want the weight and suspension of a MX bike. Weather it’s necessary or not is another discussion. I started thinking I was going to put the cbr500 in a modern crf. Thanks to this forum I hit the brakes on that one. I really like the WR YZ steel bikes but have seen the threads where others have failed. Should I just Buy an R3 motor so we can can actually get an idea what it’ll fit in? I’m pretty sure it would fit in the wr250r but it’s pricey, heavy and not suspended as well as I’d like. All input appreciated and welcomed!