HT-HQ 253 and 308 are all trimatic and 3/4 speed pattern.

HJ-VL 304/308 manual and all 253 are trimatic pattern.

LH-LX V8 are all trimatic pattern.

10/74 (HJ) to 11/81 Holden, Commodore and Statesman auto 308 had the rear of the block drilled differently to suit the TH400 and (from 5/79) TH350.

VN-VSIII 304/350 are all TH pattern to suit TH700R4 (VN/VG), 4L60 (VP), 4L60E (VR on), T5, Getrag or whatever the HSV 6spd was called (plus Statesman derivatives).

1979-1980 Bedford truck 253 and 308 were TH pattern.

SO, if you want to fit an Aussie 4spd best bet is to get a trimatic pattern block. Almost any 253 will do. And steer clear of TH pattern engines or post VL engines. You can buy a CRS or Dellow Bellhousing to suit TH pattern 304/308 or Chev to Aussie box but not a good idea on LH-LX Torana or HX-mid HZ as their clutch mechanism use the 4spd pattern bellhousing bolts to attach to the block. Will work fine with a HQ-HJ or mid HZ-WB though.