My friends talk about turbos all the time on late model stuff, but I’m completely in the dart on vintage cars and drivetrains with the super snails. So here are a few questions.

How much maintenance are single/dual set ups?
Liquid/air cooled?
Compression needed for street/strip?
Comparable costs to blower/power adders?
Intercooler? Water/meth injection? Fuel type?
Looking over on eBay, seems they offer single/duel turbos for all mopars except the big block. Are big blocks with turbos good or bad, or just a lack of demand on this set up?
Thanks for any info.