4 grand is one hell of a budgeted swap. It can be done, but its a lot of work done yourself and second hand parts. If you plan on getting it tuned, you can add 1000 for a tuning solution (aem, hondata) plus your tuners cost unless you so it yourself. Untuned, you can cut the cost a lot and run an immobilizer bypass. Your $700 price....does that include a transmission? If not, you can go ahead and at least double that price for a slow ep3/rsx base model transmission. A couple hundred for a clutch pressure plate and flywheel.
You can search for these necessary parts and get a rough estimate of expenses:
- TRANSMISSIOn
- ECU WITH IMMOBILIZER (or tuning solution)
- STOCK ENGINE HARNESS (should come with your swap)
- CHARGING HARNESS (or fan your own)
- MOTOR MOUNTS
- CONVERSION HARNESS (or do your own wiring)
- SWAP AXLES
- CLUTCH LINE
- K SWAP RADIATOR (fan stock radiator to work)
- RADIATOR HOSES (or fan your own)
- RADIATOR FAN
- RADIATOR BRACKET (or fan your own)
- COOLANT TEMP SENDER AND FAN SWITCH
- FUEL SYSTEM (RAIL, LINES, FILTER, REGULATOR)
- SHIFT BOX
- SHIFTER CABLES
- HEADER
- A/C-P/S DELETE or ep3 idler pulley setup
- OEM HONDA BRACKET #11910-PPA-000 (if using a k24}
- HEATER HOSES (if you keep heat)