valves for a 5.0 e7te

I am upgrading springs on my heads for a bigger cam and getting rid of the rotators on the exhaust . The problem is that the exhaust valve groove for the keeper isn't at the same height as the intake valve groove so the springs are at different heights.

What valve do I use?
Thanks

I would use shims if the distance is not too great otherwise Manley race flows are the way to go
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page 49of the SVO catalogue might help you, as for mild cams quote=Production intake valve retainer can be used with both intake and exhaust valves when using M-6513-C302 spring is used on 1979-94 cast iron production cylinder heads. Shim to achieve proper installed spring height of 1.69in-1.70in .We have used a negative set of keepers[locks] on the longer valves ,to save amount of shims, always check for coil bind .[img]/forums/images/smiles/icon_bow.gif[/img]
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