It's my opinion that you should replace all gaskets before putting the swap in, as it's much much easier when it's just sitting on a pallet rather than stuffed into your EK. Same goes for any maintenance stuff, like plugs, wires, cap, rotor, fuel filter, etc. It's all easier to deal with on the pallet rather than having just plugged it all in and something isn't working right.Shift linkage like previously stated needs to be an Accord or Prelude shifter with cables. Stock EK shifter linkage will not work and must be taken out.
Stock radiator will work if it's in good condition and you're not road racing. My H22 has been on the stock EG single core for nearly 2 years and it nevers overheats.
GSR harness will work, but you'll still have to modify it. Mounts and axles are fine.
Triple check the wiring harness against the wiring diagrams available on this site, and double check the vacuum hose routing once you have the engine installed. Double check everything, and hope for the best. 
'93 EH2 - H22A
