I know the first chapter of the FRCS gives Realms equivalents of the PHB gods...
Yeah it does...
Boccob ---> Azuth, Mystra, Savras, Velsharoon
Corellon Larethian ---> No change
Ehlonna ---> Mielikki
Erythnul ---> Cyric, Garagos, Malar
Fharlanghn ---> Selune, Shaundakul
Garl Glittergold --->No Change
Gruumsh ---> No change
Heironeous ---> Torm, Tyr
Hextor ---> Bane, Loviatar
Kord---> Lathander, Tempus, Uthgar
Moradin ---> No change
Nerull ---> Cyric, Malar, Talona
Obad-Hai ---> Silvanus
Olidammara ---> Oghman, Sune, Tymora
Pelor ---> Ilmater, Lathander, Torm
St. Cuthbert ---> Helm, Hoar, Tyr
Vecna ---> Shar, Velsharoon
Wee Jas ---> Azuth, Kelemvor
Yondalla ---> No change
I'd really recommend checking out the FRCS, Faiths & Avatars, or whatever the new FR gods book is for a better idea of what gods to pick though.