Welcome to the forum. If you are seriously considering an SRT6 then you may want to consider importing one into Canada. There were only 30 or so SRT6's brought in to Canada so they are extremely rare and do not come up for resale very often. The timing for import hasn't been better with our dollar swinging around parity. If you could afford the car now, I would suggest exchanging your Can $ to US $ while we are on or above par with the US $ , then when you find the car you want you will be ready to pounce.
I'm sure you have already seen the Grey SRT6 posted here that is for sale on ebay............ just a few hours drive away!
Good luck in your quest.