I need to buy a catyletic converter for my 91 Formula with the 305 TPI. But I'm confused as to what exactly I need to buy. It will connect to the Hooker cat-back I'm about to purchase (and Mark cheers in the background ). Do I need 3" in, 3" out, do I need A.I.R. thingies.... what do I need?

I don't have mounds to spend so budgeting is an issue here.

 

im lookin at exactly what ur lookin at... im gettin hooker too... calm down mark...look in jegs.. im gunna get the magna flow cat... u need 3in and out... and air if u have the AIR pump still on ur car.. i belive it depends on where u live, u might be able to take off the air... but people have told me to keep it on my cat... whatever... but there is the 3in oval one for 109... not bad at all, plust its a nice stainless steel body... so it looks nice,.. like everyone will get on there hands and knees to see it, but it seems to be the best priced ....

 

Alrighty. Ordered. Thanx!!


Eek, just thought of something, the previous owner of my car welded a straight pipe in place of the cat, what did he do with the AIR tube? Hrm.....