Good question hehe. OK lets try to answer it.
Mazdaspeed piston set - $120 These are higher compression. Only questions are, are they forged? Do they have valve reliefs? I will call and talk to someone before I buy.
FS-ZE Intake Cam - $168 I don't know the specs, but guessing it has higher lift and longer duration than stock.
Mazdaspeed Exhaust Cam - $142 Don't know if this is the same as our stock or what? Will call and ask.
Also Installation will be a lil pricey. Not gonna do it myself cause changing pistons is a pain in the ass. I think the Mazdaspeed pistons may be .050 oversized, meaning the block may have to be bored. I am guessing ~$500 for install of the cams and pistons.
With just those I am hoping to be at ~170 HP at the engine. Basing that on the FS-ZE engine, which has 170 HP. Maybe a lil more cause the Mazdaspeed pistons are higher compression than FS-ZE pistons.
Apex N1 universal muffler - $210 Gonne get this one and get my exhaust custon made from the header back. Prolly cost me about $200 for the piping, so $410 total.
Not gonna use a cat, maybe it won't be too loud. Total exhaust system should add 10-15 HP, hopefully.
MHP Cold Air Intake - ~$330 It is something like that, too lazy to go to the site and look up price hehe. Should add 8-10 HP when used with exhaust and other mods, maybe more
So I am hoping all that will give me 180-190 HP at the engine.
I am hoping with a few tweaks and maybe an air fuel controller, I can get 200 HP at the engine.
Total: $1170 for just all the parts and the exhaust work. Probably about $1600 if I get the pistons and cams installed by a shop.
So there you go, for about $1600 I am thinking you can get damn close to 200 HP. I am doing all this as soon as I sell my rims (took em off cause they were too big hehe). Might be about a month, but I will get all this done and get it dyno'd.