Just in case anybody was scratchin their heads, the Gundry boards fit the bill for MOST carver pre's (anything with the Holography Circuit), the Power Supply board and gain board will retrofit to many PL and Carver pre's, and the power board can be fit with nearly any size regulator so will work darn near anywhere. Very versatile. I'll order them in a couple weeks. I'm making the finishing touches to the Sansui boards so I can order all at once