Maybe check the FAQ in the the technical links (top of page) and see my page for more info on these engines... 1HD-FTE is fully electronic, 1HD-FT is a 24 valve mechanical (hard to find), slightly less power, 1HD-T is 12 valve, mechanical. You want mechanical most likely for ease of conversion. The problem is 24volts to 12V (these diesels are mostly 24 volts, far supeerior in my opnion but makes it a bitch to convert), and your truck is 12V. Unless you do a turbo charged (1HD series), you will have a massive step down from your current V8. Even then, you will not produce the power and quality of drive your V8 has... The big PITA is making everything work, tach, speedo, and other things that will need to be base items in a 100 series Land Cruiser. If it were me, I would just buy another car IMO for the cost of a conversion, and I brew much of my own fuel as well. Also, it is a huge, time consuming thing to be a regular brewer that takes some investment ($2-3G easily when done right) and even then it doesn't always work because you have to share labor, costs etc. I am in my second go-around brewing, the first was good but group dynamics did not work well with about 4-5 guys. This second time with $3G and investments and three guys, and a professional shop and it is working very well. But we have at least 100 hours into building this processor too. Also, by far, the nastiest aspect is collecting/sourcing the grease. And even then, there are quality issues you have to deal with you can only use 20% of it in the winter because of gelling problems. Just my $.02, I have been brewing for over a year now and manage the Utah biodiesel coop... Andre