4kq NOS and bolt-ons

[jackr@internet.kronos.com]

     How long will an NOS tank last?  I'm under the impression that you use 
     up your tank in only a few fun sprints.  It sounds fun, but basically 
     impractical.  If someone knows of any reasonably priced turbo or super 
     charge bolt-on, let us all know!  I don't want to do an engine swap 
     because it seems a shame to throw out my engine just as it's broken 
     in.
     
     Jack Rich
     84 4kq 106K miles and starting to get strong[er].