RHS heads with 1.44" O.D. valvespring?

I have Brian's RHS heads, but have enough cam where the beehive's aren't exactly what im after anymore to do the job. Brian has never tried the bigger springs since all the heads he sets up are with the beehives, and he is the one who told me he is not sure if the bigger springs will fit, so I thought I would ask on the forums to see if anyone has tried with success.

I am using Hughes 1.6 ratio shaft mount rockers