Ooh, really really wanted one of those!  Were the lockers std?  Anyway my funds fell short of the 4.2GR (by about 70%) so just have to hope my open-diffed 3.3l will manage!  Having said that I only just bought it on ebay and the seller seems to be incommunicado, so who knows, might not have bought one at all....
Nice landy btw!