Actually that is a pretty good question. I read it as asking about a dropped axle. I wanted a dropped axle since age 15 but bought a 5" drop which I thought would be conservative but now I have a very low front end. If I did it again I would buy a 4" drop. However I still need to get an alignment, so what do I tell the shop as to caster and camber for a '29 Model A with a 5" dropped axle. I know the tires should toe in slightly but what are the specs?
To partly answer the question, it seems to be a good idea on an early car to use the cross steering mode using a dogbone on the right side with two holes so the extra shaft can fit in there and reduce the bump steer. The Speedway catalog shows both a left side steering arm with a Mustang box but recommends a right hand cross steer set up as on early Fords from 1935 on. I am using a Flaming River Vega box with the cross steer setup. That is also the basic setup used on most of the Brookville repro frames for early Fords. Also I guess it is worth mentioning that a tube axle will not flex and possibly crack using hairpin radius rods while I-beam type axles will twist a bit and can use hairpin radius rods; either tube or I-beam type axles can use the newer four-bar setup but if you want it to look like the '50s it should be hairpin. I have the four-bar set up with an I-beam so I figure that has a little bit of independent flex although certainly not true independent suspension as in a Mustang II set up. Maybe a Mustang II front end is good under fenders, but in my opinion it looks strange in a fenderless setup. Can anyone tell me the camber and caster settings for a 5" dropped cross steer setup?

Don Shillady
Retired Scientist/teen rodder