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for the price of the Safc plus 100 bucks you can buy higher compression pistons which @ 10.5:1 compared to stock 8.5:1 should give you like 30 horses to the wheels, and you can bore it out while you're there. Better investment IMO that the SAFC cause you wont need it. People run 200 horse n/a ka's with stock injectors. all you would need is a fuel pump. And i'm guessing the Jic exhaust is way over 500 bucks.. To be more cost effecient buy used intake/exhaust. IMO these are overpriced when brand new.