[Plastic_Fork]

Honestly, I wouldn't buy it. He's being a little shady and fixing the door and paintjob will cost way more than your budget will allow. And the hood looks like it's not fitting correctly - no telling what that might end up costing.

Sounds like he swapped in a '96+ EX engine (if that's the case). The motor code that is stamped on the block for the EX motor is probably either D16Y8 ('96+) or D16Z6 ('92 - '95). The stock Civic DX motor code for '92-'95 is D15B7. I would check that to make sure he's telling the truth.

And yeah, an intake, header, and full exhaust system for Honda's usually only net around 10hp, give or take. Honda motors are already extremely tuned as is, so wringing more power out of them is difficult and expensive for the little bits of gain you receive from the upgrades.