My client has asked me to change the output in the attributes pulldowns on cart pages.

I dug through attributes.php and shopping_cart.php and html_output.php but I cannot seem to locate where these are formatted: "( +$41.49 ) (+29.7lbs)"

Client would like options to read and be formatted like this:

Single - $1.76
Case of 12 - $21.11 (+16.5 lbs)

Where should I be looking for the formatting of that? At the very least they want to set order and use hyphens between unit and price.

Thanks for any advice!

Current output:

Code:
<select name="id[1]" id="attrib-1">
  <option value="1">SINGLE</option>
  <option value="2">CASE OF 4 ( +$41.49 ) (+29.7lbs)</option>
</select>