Suggestion as to the best trolley jack to lift Alfetta GTV say 450-500mm
For under $200 this trolley jack will meet your requirements of min of 100mm to max lift height of 465mm and includes free delivery for orders over $99
https://sydneytools.com.au/product/daytona-d2000as-2000kg-aluminium-steel-racing-hydraulic-trolley-jack
many thanks Bonno