Dave, I am in the middle of what you need to fix on your carrier. If it is a bit of practical advice I will pass on what I have found up to date.This is all Aussie LP2 info so use what you can I suppose. I hope you do decide to fix up the original steering, mine was almost unrecognisable when I first started. All the rods in the floor had rusted away completely, the cam plate yokes (rod ends) were rusted away to almost nothing. Practical stuff- The nut that holds the cam plate bearing to the belly plate is the same as a Mini Cooper S front hub nut. The countersunk screws that hold the bearing in the warping plate are also Mini Cooper parts, rear brake drum screws. The bearing in the cam plate is the same bearing as in the rollers that works on the cam plate & also the steering column base bearing, check that out as it will save you several trips to the bearing supplier buying the same bearing 4 times.. Search under "lp2 steering measurments" (please note miss-spelling!!) as this has good info & a few good piccs from Bob Moseley of "what it should look like" Don't be too fussy with the finish of the edge of the cam plate, as we say down here"she'll be right mate!". .
lets just see if this works -
LP2 steering measurements
Rob