1. Almost. All Statesmans sold in Australia post HQ AND before 11/81 will be TH pattern. Not all are 11QT though. Late HZ are 11ZT and WB are 11WT (Deville) or 12WT (Caprice). SUP and CKD 8WS (called Deville here) and 8WT (called Caprice here) sold in South Africa, Malaysia and Thailand had other engine/box options available like 250ci Chev 6cyl and TH350 or 202 and M20 aussie 4spd.

2. Almost right as well. T5 from HDT and HSV VL has a trimatic bellhousing. Rest are all TH pattern. The rear of a VN-VSIII V8 block is identical to a red or blue TH block.