Im trying to build a Hupmobile Model A, Century six, (4 door, full fendered heavy car) and Im unsure about which direction to go with the front suspension. I have a mustangII that Ive cut out of a car, and after studying it I dont feel great about using it. Seems like alot of parts, and fab work to pull it off, not to mention cost. The straight axle that is original to the car looks good, and Im wondering about changing out the spindles or such to use it again. Ive looked through several mags, and it seems that hairpin/single spring set up is the norm. Why isnt the original springs parallel to the frame rails used? Thanks in advance for any replys. School me on suspension.