1989-91 360 roller cam engine questions

Your fine with the 405's but if you haven't bought the pistons, I would go with the h116p's get it closer to 9.5cr. 308's are nice, Check between the valve seats to ensure there not cracked though, most are. Throw the rotators in the trash. Go with regular spring retainers. 320-350hp with your above mentions is attainable.