WooHoo- My first Tech post, and this is really useful: If you have a mid-30's to early 50's Mopar you've got an a very nice- almost modern- IFS already on your car, but it probably doesn't feel like it. The reason is that the Mopar engineers- clever though they were- foolishly ran the shock between the upper and lower (unequal length) control arms. The because of this the shock didn't really compress/extend much, and you had the wallowing boat-like ride that we all know and love. The fix is pretty simple: Make an upper shock mount and attach it to the frame instead of the upper control arm. There are at least a couple of people making kits for this, and I bought one the first time I did it, but after that I just made my own, and if I can anybody can. I've done this on a 50 Plymouth and a 38 Chrysler. The details varied slightly between the two, and I'll be mixing pics of the two in this post as necessary, so Lemme know if this confuses you. To get started you'll need to cut some metal: For the upper shock mounts you'll need 3/8" material (ignore that I said "Plate" on the diagram- it just needs to be flat). I don't have a plasma cutter, so I went to a local guy who does water jet cutting. Cost me about $25 for everything. Here's what you're making: You'll need 2 pieces. You'll also need: >> 2 pieces of 1/4" stock cut 1.5" x 3" for lower tabs. >> 2 pieces of 1/4" stock cut 4" x 4" for upper backing plates. Here is what the tabs will be for after you drill a hole in them: Now a little welding: Take the upper shock mounts and weld them on edge to the center of the 4x4" backing plates. They'll look kinda like this: Next, some measuring: You want to know where your control arms are when your car is at ride height so you can replicate that when you go to position your new shock mounts. I think I measured from the top of the upper control arm straight up to the inside of the fender. Used a level to make sure I measured straight. Now Jack your car up, take off the wheels, and face the situation. Probably looks kinda like this: sigh... Now take off the old shock and unbolt (newer formed sheetmetal style control arm) or cut off (older forged gooseneck style arm) the old upper shock mount stud. Take a deep breath and follow me to the next section. I've also never posted anything this long before, so I'm gonna break it up.