450.00 is as close as you can get. Honestly there isn't really much difference in a propagation map of 450.00 versus 467.00...
However, there is another propagation map generator here that will allow you to select a exact frequency. As long as you are fairly conservative in your input, you will receive a predictive coverage map that so far has proven itself as pretty accurate from my empirical tests in the real world:
http://lrcov.crc.ca/main/
In the example below, the colors are set as follows:
Light gray = HT coverage
Light blue = mobile coverage
Light red = sketchy at best for mobile, fairly good for a base station
Repeater is 467.675 40 watts at 42' on a 7.5 dB gain Comet CA-712EFC antenna.
BTW, unlike the other Canadian site, this map is generated almost instantaneously. I use both however using the same input data and compare them.
http://puu.sh/qZF3q.jpg