Mk1 escort square headlights

Its come time to mount some lights and out of all that I have I cant get a decent set so a few questions?
Can the reflective bit inside the light be redone?
Is there left and right buckets?
Whats the best to clean the buckets?
Has anyone used these?
http://www.ebay.com.au/itm/FORD-ESCORT-MK1-FRONT-HEAD-LIGHT-LAMP-h4-SET-2-/140588394153?pt=AU_Car_Parts_Accessories&hash=item20bbb8a6a9
cheers

Previously known as SANTA