Will, you may have gotten an earlier edition of Roger's book. I don't recall if the one the latest is 2nd edition or 3rd; I think it's 3rd. It has a black cover & red back & spline. It definitely had color pics & does cover the 302. If I recall, he covered Larry Shimp's car fairly extensivily and has quite a few pics of Pete Mantell's too. The way those two put their engines in, neither was required to modify the firewall so he may not cover that even in that edition.
On my car, I did put the motor further back & a little lower. I clipped the corners of the firewall, but I left the steering cone mostly in tact. I haven't updated my journal in a while, but if you scroll about 1/2 way down here http://forum.britishv8.org/read.php?13,6554 you can see what I did.
There are several ways to skin this cat affected by where you're putting the motor & how much you want to rework the firewall area. But, you don't have to change where the cone is. If you're using the stock steering rack you won't wan to change it for obvious reasons. If you're using an after market rack (as with Ted's front end) you have to have a steering shaft made anyway & that's pretty easy. I got one done by Sweet MFG in Kalamazo MI. Once you have your firewall the way you want it, use a piece of wooden dowel as the steering rod to figure out how long you need it. Then call up Sweet & place your order. The MG uses a 3/4" 48 spline end if I recall, but if you're going to replace the steering knuckle, you might want to consider double-D or one of the other more common ends. The MG diameter/spline combination wasn't in stock anywhere around here so I had to order mine.