I have all the modified parts, AR Bell Housing, AR Transmission, AR Flywheel Cover, and cut down regular Flywheel that weights 37 pounds including ring gear. I made the same conversion on my very early Sport Coupe. When installed the conversion, from outside appearance, you would think the "A" has a multi-disc clutch.
The parts would be too heavy to ship so they would have to be picked up at my home in Northern California.
The cost for the parts is $1,025.00.
If interested, send me a PM. I have pictures I can send you of the modified parts.
Note: the Flywheel has been balanced and is tapped for a V8 pressure plate; only thing required is the pressure plate and clutch disc.