if your going for more horse power then a bigger surface area for your clutch is going to benificial. depending which bellhousing your using you could use a 4AGZE flywheel (223mm or 230mm) but i know the dellow bellhousing requires mofidication to fit a GZE flywheel, in which case a smallport 16v or 20v flywheel (212mm) will be ok for you.
ring exedy and speak to them they can match you up with the correct parts