a few days ago I got a fed Y-pipe and and I wanted to weld some holes to make it into a Cali pipe WEll the bad part is i dont know where to weld the hole dose any one know were and is this really possiable to do well i need help ASAP THANKS!

also would it be the same power as a cali pipe? im getting it done for free but i just dont know where to make the holes?

 

why do you want to make it into a cali pipe?.. do you have a cali-spec max?.. it's probably easiest to sell the y-pipe and buy a cali-spec pipe if you need it.