1UZFE conversion done with a Marks kit  

 I`d love to see that  
 
 
As far as Marks are concerned Chev and Holden are the ONLY 2 motors in the world.
Dellow and Castlemain Rod Shop are the only 2 that make conversion kits for the 1UZFE.
If I was you I`d do alot of research on radiators that will cool a V8 in a bundy before you got started on it. A lot of rad`s will cool the 1UZ noworries on the highway or even around town. But once you are doing the slow work it will heat up.
I did ALL!!!!!!!!! the work either myself or with the help of mates that didn`t charge me a cent and it still cost me approx 4 1/2 to 5g.
half cut - $2000 to $2500 depending where you get it. If you`re lucky you might find a motor with all the extra`s including PS pump, alt, starter, airflow meter, loom, computer for $1500.
conversion with everything needed including new clutch - $1200
sump - $600 you might even get lucky here and get a motor with the correct one allready fitted. But then the chances of EVERYTHING else being what you need is slim. These things are - a crown fan assembly as its the only one that isn`t hydrolic. A crown oil filter remount mount, most have the filter directly mounted to the block and it usally needs to be moved for clearances. The best standard computer to get is the crown as it has a sepperate one for the auto and is the easiest if running a man. Then there is the exhaust headers as some are never going to fit between chassi rails.
engineers report $600
Now as you can see I haven`t listed the cost of somebody doing the mounting of the motor or the wiring of it. Kdog I think does a loom for the 1UZ into a hilux, I`m not certain of the cost but its more then a few hundred bucks. Exhaust well that can be from around 100 to 500 depending if you need a new cat converter or not.
$5000 mmmm might be doable even with paying somebody to do some of it but hell it`ll be tight as.