Well if
racin85 is running an E303 with 1.7 rockers, that comes out to a total valve lift of 0.529". I'd go with a CompCams Xtreme energy grind, since they'll give you good HP yet keep vacuum. If you wanna run all stock stuff other than the cam, I'd recommend the XE264HR. It has 0.512" valve lift.
CompCams for more details. The alphabet cams have a lot of duration yet not enough lift.
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Capri306, Moderator, The Mustang Works Online
1979 Mercury Capri, 5.0L -- C4 -- 2.73
1987 Mustang LX Notch 