[puddleglum]

Hope it works out for you. How big is the bottle? if it's one of the standard 14 oz bottles, it may only give you 1 extra brake applications. Just did a similar mod on my Echo using a 4 lb fire extinguisher bottle. It's about 2.5 times the size of a small propane bottle and it gives about 3 extra applications. You are probably going to need an additional check valve as well unless you plan to relocate the one in the brake booster. I went with the extra valve. I didn't want to risk losing brake vacuum altogether if something went wrong with my mod.