i have a 1g blow off valve that i am selling, just bought a new RFL.
this had been modded per gary and gus method, will hold 30psi!!!
it also has a plate/tube flange welded on it so you can put it right where the stock plastic blow off valve goes in the rubber hose or weld it into a hard pipe if you want.
$50 shipped, all the hard work is done, just throw a hose clamp on it and go!!!:thumb