pal suggested to me the other day "why not convert to rack and pinion steering"??? you can change the ratio on your steering box yet the system still has many moving parts............any thoughts?
Search around here. There are a few threads on the subject with pictures and good arguments on why/why not. In the end, it's going to be very difficult to find a rack that will fit in your A-body and still give you minimum bumpsteer. There is quite a bit of geometry involved.