Yeah, enginekits.com has a 335 striker kit. Don't know if forged pistons are available for that application though. You might try some Patriot performance vortec heads. They are drilled for both old style and vortec heads so your supercharger will bolt up. .575 lift springs, detonation resistant 64cc chambers, guide plates,screw in studs, really good flow numbers. All for 600 a pair. If the 64cc chambers will work, the heads alone should get you 350 horsepower naturally aspirated. If that is your power goal you might sell the supercharger and have a quick somewhat fuel efficient 305. But if you're like me you'll want the torque of the blower
a naturally aspirated 335 rotating assembly from enginekits.com plus those vortec heads sounds like a solid setup. But if you want it boosted I would do a forged piston low compression 305 and use the highest boost pulley set up you can. That would be a torque monster.