Maintenance/Hangar Costs

[aml]

I am wondering if somebody out there can give me some real world numbers
on how much their maintenance costs are for a Cessna 340 and 414. I
don't care if it has the RAM conversion or not. A good friend of mine is
starting a charter company and wants to have numbers to put in the
business plan.

I am also wondering how much hangar rentals are for the 500 series
Cessnas.

Thanks
Aaron