I have a couple of questions, can anyone verify for me. Can a S4 13b be bridgeported, i have been told yes and no? And is there any internal difference (besides the compression) between a S4 13B and a S4 13B Turbo??

 

There is a lot of internal differences between the 2 engines. I dont think the 6 port (NA) engine can be bridged unless you get turbo endplates. not 100% sure tho.