bump steer kit
The Mustang 5.0 bump steer kit is used a lot on autocross cars. with the Fox strut suspension, changing to progressive rate lowering springs changes the geometry. Normally with a Double A arm suspension you want the lower A arm parallel to the ground at ride height and the tie rod also parallel. A lot of autocross cars run a de-cambered front end with the top of the tires pointed in, and have some toe out during turns. and If the car is street driven you want predictible handling, Nothing is scarrier than going into a hard corner fast and having the car going from under steer to oversteer. having a mind of it's own. Heidt's IFS web site used to have 4 or 5 pages of suspension design information.the new owners changed the site but I found it again last year. things to think about. sometimes you can go to google books and "preview" some of the books on suspension design, building hot rods , race cars etc. some you can read the whole book on the previews, others nothing, Since you are building your front suspension from various pieces you can try to get mounting locations, pivot points, etc, right and not use the Mustang kit. and not have oil pan interference.