I guess for a lack of a better description, I'll call this my "Homemade Front End Dolly". It's simply just two short 2 x 4's, a couple of bolts, washers, nuts, and screws that make up this rather useful device for moving your Mopar around when the motor, tranny and front suspension are removed.  I used it to maneuver my Duster around in the garage or out on the driveway. It costs under $5.00 and takes about 20 minutes to build.

I started with the following items: 2" x 4" x 40" (2 ea) 7/16"-14 x 3 3/4" bolts (2 ea) 7/16" flat Washers (4 ea) 7/16"-14 nuts (2 ea) 1" x 2" x  3 1/2" (2 ea) #6 x 2" drywall screws (4 ea)

I stacked both 2 x 4's together and marked the centerline.  I then drilled a 3/4" clearance hole at the centerline of both boards to just clear a 1/2" extension.  I positioned the boards on the floorjack underneath the frame rails using the 1/2" extension as a pivot point and locator.  The extension goes through the boards and the hole in the jack.  I then raised the floorjack so the wood just touches the frame rails at the front K-frame mounting holes. I marked lines on either side of the rails (both sides) and brought everything back to the workbench.  Take the dimension of the K-frame mounting holes (C/L to C/L) and transfer it between the rail outlines made earlier.  Drill and counterbore for the 7/16" bolts.  Assemble as shown in the photos.  Add the 1" x 2" stop blocks to the ends with the drywall screws and you're finished!

The counterbores should be deep enough to completely sink the head of the bolts as shown here and the nuts on the other side. The red paint is optional, but looks cool!

This is how it looks when set up.  The 7/16" bolts fit inside the K-frame bolt holes.  Be careful not to damage the K-frame hole threads.  A piece of tape or thin tubing over the Dolly bolt threads might be a good idea.  Please take it slow while moving.  Be sure to have a couple of friends or family members around to help move your car.  It pivots nicely and makes for easy positioning.

Here's a close-up of the extension, dolly and jack.  I've used this about six times with no trouble so far.  Please be careful!

This is a view showing the inside of the RH frame rail.