d15b depends on where you get it, is probably 20-25k. add another 5-7 for the install. if you can get a true surplus, that is, straight fresh off the boat from Japaner, yun ang maganda. don't get ones na pinagsawaan na ng mga enthusiast (after d15 usually enthusiasts go for b16s).

two versions daw yung d15. one has normal vtec, the other has a more aggressive camlobe profile (18 camlobes yata) for vtec. dunno which one of these is d15b, but any d15 you get should have vtec. parang nasa rocker cover daw e... one is plain aluminum, the other is black matte with VTEC or HONDA letters.

iba ang d15 sa ph15 ha. ph15 is found in 96 civic lxi. ph16 nasa civic 96 vti.

if you want a reliable DD, just leave your engine stock with some IHE upgrades. cheap, and if you gain 20hp just like boss nicky said, then it won't be half bad.

hard to drift your car as its a FWD. drift vehicles are mostly RWD.

circuit... hmm... well i suppose things can learned. try not to go head to head with other larger displacement cars lang. kahit mas magaling ka around the corners pagdating sa straights sibak ka pa din. bka i-lap ka pa kakahiya hehe