Steering reassurance

[ashbudd7]

Hi everyone,

I know similar has already been asked but i need a bit of reassurance and guidance with regards to the steering column. Firstly, i think I've made an error and disposed of part of the column with the shell (whoops)! Am i right in thinking that this is the part I need to buy:
http://www.ebay.co.uk/itm/FORD-SIERR...ht_1016wt_1144

or

http://www.ebay.co.uk/itm/SIERRA-GRA...#ht_500wt_1378

The reassurance I need is:
From the picture, am I right in thinking this is what I need and in this order:

From the steering wheel, through the bulkhead where I need a bush/bearing
Into the extension tube
On to one of the the sierra parts above
On to group 4 coupling
On to mk2 escort rack (which is in place).

Thanks in advance and sorry for the long post!

Ash