does anybody know what the part number is from HKS?

I'm assuming that the downpipes will be the same for most hks kits with an external wastegate!!

 

go to hksusa.com and they have their part numbers. I thought that hks dps were more restrictive since they have the smashed end to them, because they are meant to get by the steering column on japaneese cars. Wouldnt it make sense to get a dp that was meant for us cars, like pettit or something, which would be more flow? I dunno just my .02. Anyways hksusa.com has all the info you will need.

 

Sorry you misunderstood I have a hks single turbo....need the downpipe for that...its about 4 to 4.5 inches wide.