No need to spend 200 bucks when you can make one. I'll try to find the site that does the same thing as the high cost model using a few fittings you make yourself and lengths of hose.

I've gotten 22 mpg on my '49 3100 w/ '56 235.


~ Cosmo
1949 Chevy Half Ton
Rocinante, like Don Quixote, he is awkward, past his prime, and engaged in a task beyond his capacities.
"...my good horse Rocinante, mine eternal and inseparable companion in all my journeys and courses." ...Don Quixote, Cervantes
"If you come to a fork in the road, take it."...Yogi Berra
"Rudeness is the weak man's imitation of strength." ...Eric Hoffer