80 series 1hz and gearbox swap into a 105 series

Yes, but not a simple swap. There is a comprehensive article on LCOOL.

Shane
Is there any good reason why you would want to try that? Most rego systems won't register a previous concept emission engine into a later vehicle. You might be lucky. Best to thoroughly check rego possibilities before getting excited. Is it a diesel into a petrol body?

Many have been done, the early hz is stronger, less polution stuff, and a h gearbox...win win win. Your trnsfer wont fit, so you need an appropriate transfer case. If you have a 105 gxl, the stick will come up forward of where it now is....(check the std van 105 for location) if thats a problem, get a hdj100 box or a fzj105 if you have a bellhousing, and now you need an izuzu 4b clutch plate to marry the spline of the box to your flywheel.