Simon, another couple of items that you'll probably have to have custom made for your car. I haven't run across either of those in any of the catalogs or web sites dealing with MGAs. You'll probably have to have mounting tabs welded to your frame for those, but that shouldn't be a major problem unless your chassis is powder coated, otherwise a little paint touch up and you should be fine.
'73 Midget (V6)
'59 MGA (I6) under construction
'73 Lotus Europa
"There is a fine line between a hobby and mental illness"