Well I found one for the FB. Just go to your local shucks/checker/kargen and look for the stock replacement one. and then just get the one with the smae letters and just a higher number. Right now I've got the Prestone 16 lb one on. I think stock is like 12 lb...

 

out of curiosity, what is the benefit of getting a higher rated one? I noticed rx7.com had some also....

 

You can get the coolant hotter without it boiling...

Boyle's law of pressure and gasses and temperature and stuff... (Damnit... It's hard to remember something when you never ******* use it!)

EDIT: Boyle's law assumes temperature is constant, pressure and volume change... I dunno what the temp/pressure law is...

Anyhow... It's why you've gotta cook **** longer in Denver (1 mile above sea level)... There's less atmospheric pressure up there, so water really boils at like 90 deg C rather than 100 deg C down here.

More pressure, higher temp, no boil.

 

what he said!!