wondered the best way to get distorted lo-fi sounding vocals?

I'm recording some real bluesy stuff so was looking how to get that warm blues distorted vocal sound

I use Sonar to record with, so would it be best just to get an effect and shove it on to the vocal track after recording it?

Distortion pedal?

There are vocal processors which have distortion on them.
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Always outnumbered, never outgunned...
Lo-fi pedals work well for distorting vocals, there's an ibanez one which apparently does the trick quite well.