MK1 and MKII wheel bolt-circle for duallies

[jdemaris]

I'm from the USA and have a question about the 6 lug wheels and full-floating rear axles I see on some MKI and MKII Ford Transit vans. Are they the same wheels Toyota and Dyna use on some buses and motorhomes? Mid to late 80s - in the USA - Toyota starting using small full-floating rear axles with dual wheels. Tire size 185R-14". Wheel bolt-circle = 6 lug X 7.25" (184 mm). What model rear axle is used in the MKI and MKII duallies? I.e. what make and what model?