>>Anybody looked into one of those competition/racing engine bay
extinguisher
systems?

Try this or go to www.summitracing.com and enter a keyword search for fire
system.

http://store.summitracing.com/default.asp?target=search.asp&type=bykeyword&s
earchtype=both&part=fire+system

Part number SSI-RC1000 seems to be the complete system although you might
need additional tubing.  I suspect that braided lines from Earls or Aeroquip
might be a better way to go.

Dave
'86 Westy