fuel cells etc. for HSR?

I've got a '75 Z that I want to use in SVRA and HSR. I can't seem to find stuff for it such as lexan windshields, fuel cell and fire bottle etc. Who are good sources pure race car stuff? Thanks

Here's some:

http://www.pegasusautoracing.com/

http://www.fuelsafe.com/

http://www.racerpartswholesale.com/

http://www.summitracing.com/

Be sure if you buy a fuel cell that it is FIA approved. SVRA requires this (Some cheaper ones are SFI approved and some do not carry any approval).

If you're buying harnesses, I'd suggest the five-year FIA belts rather than the two-year SFI belts.