I thought the days of renting a Duchess to do your IPC were well and truly over?
If you fly 737's then your IPC must be in a 737 - or at least an airline catagory aircraft you're rated (and current?) in if you're an airline pilot?
Try getting a 737 IPC in Austraila outside an airline T&C regime, ain't impossible but far from easy and don't even talk about the $$$.
Cheers