Semi decent is semi decent. Firstly, the car is heavy. That is a major setback for outright acceleration. Even if you coax 140kW ATW out of the engine, it still won't accelerate as quickly as you expect it to because of its weight. This is a car that weighs 1260kg stock.
The next thing is the engine. It is an engine designed for fuel economy and low RPM torque flexibility. You are not going to be able to turn it into a smoking hot motor generating peak torque high at the top of the RPM range without major work. It has VTEC only on the inlet side and even then it is to promote better fuel mixing (12-valve low-cam/16-valve high-cam). Then you start looking at turbo options to push beyond 140kW. You're looking at an aftermarket programmable ECU. This is assuming that there is a solution like the Kpro for the FD2. Last I checked, the FD2 was not on the supported ECU list. So you end up with something like a KPro'd FN2R ECU harnessed to the stock FD2 ECU in order to keep the dashboard and aircon working. Even with this solution, cruise and traction control do not work anymore. So if you were going to go to this level of cost, you should do an engine swap to a K20Z3 or K24A3 instead of cracking open the K20Z2 in the hope of getting it to reach 8500rpm.
I'm not saying that the Civic is a bad car. It is a great car for regular use. But if you are trying to turn it into a track/acceleration monster, there are many hurdles to overcome which will cost so much money that it would be cheaper for TroyS2000 to keep his S2K, get the FD2 Civic and keep it stock compared to modding the FD2 to go as quick as his S2K. I own a CL9 and we have the exact same problem. Great engine, great chassis, extremely heavy car and no way to reliably and cost-effectively push high power numbers to offset the weight (we also have the ECU issue as well).

