i have BBK equal length headers, and i wanted to get a prochamber, i was told it would fit no problem, if im wrong somebody correct me and let me know, because im buying a prochamber for my equal length BBK's
however i heard that if its BBK longtubes, the prochamber will not work.
On longtubes no because BBK LT's are longer than MAC's. On shorties it won't make much difference, except many have problems with MAC products. Either one will work but you might need the help of an exaust shop.