The best option, price wise, is to buy a 1KZ auto from a hulux surf.
As I want a manual I want to mate the auto engine onto the R150/1 gearbox. So here's a coupla Q's and would be gratful for the best answer..
1. Is it a difficult job to mate the 1KZ auto to the manual gearbox

2. From what can I take the flywheel from

3. Which bell housing do I need for the 1KZ to my current R150/1 gearbox

The other option, a little more pricey is to buy the 1KZ manual from a prado....not very common, that why I want go for mating the auto to my manual box.