Stevevp and onejayzed,
Thanks for your input guys, much appreciated.
With the final car not picked yet, sumps and mounts will be up in the air. Half cut Soarers are pretty rare in Perth too, but we have a heck of a lot of them on the road, so one may turn up one day. The 2UZ in the Land Cruiser has a rear bump sump, so that may be an option, but I like the idea of the 141 Crown with the single ECU.
Anyway - thanks again - I will be storing this info away and keep going with the research.
Cheers,
Mitch.