im about to get this gsr jrsc kit but im not sure about the pulleys it comes with a 3.8 and a 4.0 pulley does this mean its a 4.0 is 4psi of boost? and what will be my boost level be if i have a b20 crank pulley any help is apreciated thanks .

 

bump..its probally the most dumbest question but i cant find my answer..

 

never mind found some info..
http://ftlracing.com/tech/honda/jrsc_pulley.html

 

Those are the sizes in inches...