I have always wanted to do one of those trucks up as a maximum "over-the-road" style truck, meaning, making it as quiet, comfortable, and nice for ubber-long road trips/etc. Maybe swapping to a 4 speed auto (that gen came w/ 3 speeds right?) as well...
To me it'd work better as a crew-cab, but aside from looking rough, you've got a decent truck to work with as it is...so it's simply personal preference/money that dictates the decision to me.
I do really like that black one above