Yes, the Progressive Dynamics unit is a very good one. They have been put in some of the WFCO converters when they failed.
If you need help on the install, let us know. I have pics somewhere of that conversion on a 2007 T286SR when the WFCO went out and they put the PD replacement unit inside the old WFOC housing.
Current Sunlines: 2004 T310SR, 2004 T1950, 2004 T2475, 2007 T2499, 2004 T317SR
Prior Sunlines: 2004 T2499 - Fern Blue
2005 Ford F350 Lariat, 6.8L V10 W/ 4.10 rear axle, CC, Short Bed, SRW. Reese HP trunnion bar hitch W/ HP DC
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