Since a Custom neck doesn't exist, then no. Having said that, I got such modded FSn in a customer's Epi Sheraton, modded with the two rows of filisters and an Roughcast A4. As the player played Jazz/Fusion, it was a "match made in Heaven" (his words, not mine). He was most happy with the middle position setting, being an UOA5-modded '59/Custom Hybrid in the bridge.
/Peter