i have a 1990 civic hatch, full adjustable coil over, kyb shocks, full body kit, crx interior converson and a completely bone stock internally b16A, i have an intake manifold, header, p70chipped comp, and a 70mm skunk2 throttle body, i have also installed a ZEX dry nitrous kit with a 75hp shot and the engine has held up amazingly, in yer case fully built engine, with H-beams rods and forged piston you could handle 100hp easily without any worries about internal damage!!!