what are the spring rates on those lowering springs? you need to be careful with a lot of the springs out there for the ep, a good number of them have lower spring rates than stock plus a drop which usually results in the car handling like shit...also, em2 springs fit the ep, so its really easy to get the wrong ones as well and those are always softer...
if you drop the car more than 1.5" you are playing with hurting your handling, 2" is about the limit...i run progress springs they are stiffer than stock but still driveable, they drop the car 1.8" in the front and 1.5" in the rear and cost $150 shipped from one of our vendors...
as for swaybar, whats the size on that godspeed rear sway? im running the 22mm ctr sway and got that for like $80 new from jdmland.com and i love it. the sway bar is really going to help reduce all the understeer that has been dialed into the usdm ep3...so by adding the bigger sway you'll be able to have much better throttle control over the rotation of the car but also you'll much more significant lift off oversteer then before.
hope some of this helped, but id say do the springs with the intention of doing the rear sway next
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