I'm just starting the build on my '48 CJ2a/M38 and am trying to decide on how I want to set the suspension up. This Jeep will be running a Small Block and I'd like to keep the lift around 4". I've used YJ springs on similar applications and really like the flex and travel. 1. How common is the YJ spring swap on flat fenders and what are the pro's and con's of doing it? 2. Are there any aftermarket kits available to make the swap or is it all self fabrication? Thanks in advance!