I've never been that keen on the standard capri wheel – it doesn't look like it has enough dish.
I picked this old Astrali wheel up on eBay for £10. The boss for it was more expensive at £25.
After a bit of a polish, it came up nicely:
First of all you need to prise off the centre of the existing wheel, then undo the 23mm nut which
holds the steering wheel to the shalf, but leave it on slightly (so when you try and pull the
wheel off you don't hit yourself).
Once this was off I found it very difficult to remove the wheel, as they seem to very easily get
stuck on the splines. As long as it hasn't got stuck it should come off by rocking the wheel slightly.
If this doesn't work, you'll have to do what I did, and use something as a punch to hit the steering
column with. I used the middle middle of a hub puller and a club hammer, and after a few hits it came loose.
Once the old wheel if off, a small dab of copper grease on the splines is a good idea to stop everything getting stuck on again.
you need to attach the new boss, taking note of where the notch will fit
in relation to the self canceler for the indicators.
The notch in the boss, relates to the plastic peg on the steering column
Put the centre nut back on (although not fully at this stage)
The wheel then attaches to the boss using the screws provided
One these are done, and you are happy the wheel is straight, tighten up the nut to 20-25 lbl ft and fit the centre cap