You will not need new lifters. 206 Cams require lash caps. Any smaller grind i.e. 212 or greater require beehive valve springs, lash caps and custom tuning. If you decide 212s ensure you don't skip any steps, as I know of one 4.7L that went 212s without lash caps or beehives and the pistons started pounding valves. He had to replace the heads in his 4.7L so ensure you do everything right the first time.
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