1996 5.7L Vortec Timing Cover Question

[76SeaRay]

I want to go to the Cloyes 9-3145 double roller timing chain and gears on this rebuild. The engine is a 1996 5.7L vortec with roller cam and block is an 880 block. I know the standard timing cover won't fit a double roller. This will be a Rochester Quadrajet setup with Thunderbolt IV ignition so I don't need the crank sensor hole in the cover but do need the timing marks on the cover. Does anybody know of a timing cover that will fit over the double roller and properly clear the water pump etc? Anybody done this conversion before?