Trick Flow small block heads

Talked to Trick Flow today to get recommendation for my application. My plan is to run a hydraulic roller in a street engine with about .550 lift. he said the the TFS-61417802-C00 part number is the one meant for the hydraulic roller, and that the part number TFS-61417801-C00 is for flat tappets. Also, he mentioned that the the latter head was being used with success on some hydraulic rollers depending in required spring pressure from the cam manufacture.