Depends on how FAR you wanna take it. For an all motor set up check this site
http://www.importbuilders.com/block.html
$3050 for just the block with this setup
Iron Sleeves for total strength and durability
IB Spec Wiseco Pistons, JE pistons, or Arias Pistons. You choose!
Eagle Rods or Probe Rods
Bore, Hone, Hot tank, Deck (if nec)
Balanced Crank
Polished Crank
All new Bearings & Thrusts
All new seals, and Oil pan Gasket
New VTEC oil pump
New VTEC water pump
LS/VTEC Oil line Kit with all fittings
Compressions come in 8.4:1, 9.8:1, 10.5:1, 11.8:1, 12:1, 12.5:1
Price: $3050 Shipped.
For a built head its $650+ $2525 for this head
"IB Spec" Head Package: $2525 + shipping/handling
Comes with "special" Portflow head porting, valve train with Portflow inners, Ti retainers, new valve seals, hot tank, resurfaced, stainless steel black nitrided valves, with dowel pins drilled for LS/VTEC. This is a special job, done for Import Builders only. Also included are Skunk 2 cams and STR cam gears. Talk about killer horsepower. We have three all-motor street cars at 240+ WHP. What about full race cars, you ask? Well, we sponsor one with 280+ WHP with the above setup. You want the power, you go with IB spec. **Core required.
** Import Builders can supply you with a bare B16A head that is in excellent condition for $650 if you need it. These heads have never been milled and are cleaned thoroughly. These are not old junk heads you get at junkyards. Clean and gone over completely. GSR heads are definitely more, but too rare to sell individually.
so your at $6100+ for the block and head you also need a tranny. You can pick an ITR tranny for $1500-$2000
So for Engine and tranny your at $7600, and then whatever bolt ons you want, i.e. cam gears, pulley, plug wires, FPR, header, intake, intake manifold (skunk2 or JG edlebrock).
You could easily spend $10k on an all motor engine