ok so im trying to put together a new exhaust system for an 86 na.
mine is completely rusted out including the converters so this is what i was thinking.

i have (or plan on buying this weekend):
racing beat header
new stock replacement y-pipe.
now im assuming that RB header will not line up to the stock y pipe so im going to have to put some pipe inbetween the header and y-pipe. Is that the case?? im going completely catless.
Also any suggestions on what mufflers to use?? and how loud will this be?
Also i keep hearing about the cats providing the backpressure to open 5th/6th ports. Since i wont have cats i heard something about wiring them open? can someone explain this to me??
This is my first rotary project so i hope someone can provide me with some good info.
thanks.

 

id reccomend a full racing beat exhaust. it will supply enough back pressure for the aux ports, and sound incredible

 

well thats the deal. full RB exhaust i cant afford at this time.
and one of my friends is willing to hook me up with all the welding at his shop for my exhaust. so thats the reason why im doing it this way.

 

noone knows?

 

corksport header with collector cut off
dual borla xr-1 presilencers
to borla FC mufflers
full duals that kill Racing Beat's set.