I dunno, might be worth looking into more. You have the blue cylinder heads, maybe nothing, maybe not. At the least, it should mean they have been off the car at some point.
Strut tower brace.
Caster Camber plates
Some sort of CAI Moroso or Dense Charger maybe
Cant tell on the MAF but it doesnt look like the stock stepped one.
Looks like a 130a alt upgrade
All external stuff but someone put some time into it so its hard to say.