OK this is what you should do!
if all you want is 250 hp to the wheels then i have a good idea.
spend $1800 on a Stage 2 JUN head package
then for only $1500 you can get a bottom end kit which includes ...
Honda Prelude Vtec 1992-01 (No need to change Sleeves!)
Engine
Code Stock
Bore Includes: Kit #/Price
H22A1, H22A4 87mm Complete Gasket Set
Cometic Head Gasket
Mahle Gold Series Pistons
(87, 87.25mm bore) and
(8.9-1, 10.2-1, 11.3-1 comp ratio)
Performance Rings
Performance Wrist Pins
TOGA HP Main Bearings
TOGA HP Rod Bearings
Thrust Washers
Timing Belt
Expansion Plugs

Additional Parts Available (not included in HP Kit):
Turbo Kits
Connecting Rods (Eagle/SCAT/Oliver/Pauter) EKH28MPX ('93-96)
EKH28LMPX ('97+up)
$929

Call to Order:
(603) 378-0090
http://www.importperformanceparts.net/

Pro Comp Engine Kit Also Available:
Includes parts listed above with:
1. Re-Con Forged Crank
2. H-Beam Rods
Kit #
EKH28MPX-PC (93-96)
EKH28LMPX-PC (97 & UP)
Price: $1529


then upgrade all of your fuel ( rail, pump, injectors, and pressure regulator )
then get it tuned

I know you wont be boosting but it will be more reliable in the long run and you should have close to 250 hp to the wheels.
Hell if that isnt enough then now your motor is very capable of holding a 100 shot of N20!
POWER PLUS RELIABILITY HARD TO BEAT.