I've got lots of info on Turbo Falcons. There are three main breeds - Mike Vines, Garret Normalair, and AIT. I've no info on AVO
Mike Vine kicked out XE/XF conversions of the 4.1 carby and EFI sixes in Brisbane. Most conversions had compression plates on early turbo instalations, which ended up blowing. Mike quickly decided to use remachined alloy heads with metal removed, and then added 50/50 Methonol/water injection on top version to stop detonation. (This was an idea first used by GM in the early 1963 Olds Jetfire F85's which had what became Rover 3500 V8's). The carby versions were never well regarded because, although they were well engineered, they couldn't cope with poor quality service. All carby turbo versions that Mike did had either single or dual Stromberg CD 1.75" carbs. These were often bored out to 1.875 inches, and could top dual caby versions could drop a maximum of 260 kW at the flywheel.
Two were tested by Modern Motor in 1985. Check old issues of for details. Ancedotal reports of them are found in some issues of Performance Street Car in late 1999. . EFI versions were much better set up. Some customers used 600 cfm Holley draw through versions, but this wasn't an authentic Mike Vine system. The guy kept out of the schtuck by ensuring the conversions never detonated or experienced head gasket failures.
AIT systems were far more advanced than Mike Vines, but the 1987 recession took out this company, along with a monumental wipe out of their stove hot XF Twin turbo 4WD Fairmont in the hands of some jurnos in Britain. They had a subsidary fuel system in addition to the normal EFI system, which is the first thing to look for to pick an AIT vs MV Turbo.
Ford gave no support to Turbo conversions. BW 35/40/45 transmissions couldn't take the strain of a turbo without proper stator supports, clutch packs and other mods. Ford was totally unwilling to import the FMX replacement trans, the AOD4, to act as an upgrade auto gearbox. Tougher imported C4 gearboxes ran out in the XD serise in the sixes, so Ford Ausralia had no way of supporting warranty claims when a BW gearbox was used. Mike Vine suggested 4-speed BW SR or 5 speed BW T5 be used. Ford was very close to engaging IHI (via Dick Johnston) to supply turbos for the XF Falcons, but they had a disaster with the hastily cobbled up Laser Turbo's that used a local turbo conversion. Mitsubishi had the same issues with there local 1981 Sigma Turbo. Wisely, they waited until they could get a proper trans and developement budget. The XR6 Turbo is 18 years late, and could have been out in 1985 if they tried.