I may be buying some Harvey (rip) ported headers, just wondering though if they headers from different my cars fit each other.

My car is a widetrack blob, would ported headers from an earlier car fit? Also is there a difference between wrx and sti headers?

Cheers guys, advice much appreciated!

 

the new-age cars require a Lambda boss in the OS collector that may not be present in all types due to majority of the classics not ahving it (v.early JDM cars used a similiar set-up)

other than that then yes single scroll are interchangeable basically