25-50 HP shot of nos really isnt too much...any power adder will reduce the life of an egine...but not all that drastically...u wont have a problem with that...u could actually rig up the system to the aircleaner to inject right into the top of the carburator...wouldnt be too hard to do...or u can get a kit from eldebrock which is a 2BBl spacer with a spray nozzle or 2 and various attachments...probably not too pricey..
