First, welcome! It's good to see another enthusiast on board.
Second: periods, paragraphs, and capitalization will go a LOOONG way to making your posts legible. My head is spinning...
Some things about your post that stick out. I assume you're interested in racing in Improved Touring:
>>> b13Nissan sentra Japan spec GA16DE
As we noted in the other thread, your car is legal in ITB. However, this engine may not be. Only US-spec engines are allowed, so you'll need to do some homework and make sure that your GA16 conforms to US specs. The intake manifold without EGR, for example, is probably not the same as used un the USDM cars.
Just do some homework
>>> (hotshots intake and headers),under drive pulleys, Jim wolf clutch...
All legal.
>>> 7 lb fly wheel , Japanese transmition = lower gears
Neither are legal for ITB. You can change your final drive ratio and can add a LSD, but gears must be stock.
>>> B14 cams and they are still Nissan original ga16de so they doesn’t have to be considered illegal for IT
Unfortunately, they are illegal. You can only use B13 USDM cams in your engine in ITB>
>>> suspension department just regular poor mans stuff AGX hiperco springs ,ST bars
Legal.
>>> 1996200sx brakes
Not legal.
>>> 4 point role bars
You'll need a 6-point cage...
>>> but you can get a b14 tranny and change the equation
Not legal...
You're enthusiastic enough, but you've fallen into a trap that many of us (myself included) have encountered: building a car before being fully aware of the rules (or, in your case, building it before deciding to go racing). We can certainly assist you in getting fully prepped, and with the 1.6L car you'll be able to find SCADS of replacement parts all over the place.
Let us know where you are and what your plans are, and let's see if we can't get you on the track soon... - GA