I would strongly reccomend getting your flywheel redrilled to take the 200mm p/plate. There is an off the shelf driven plate which has the larger dia, and fits the A series spline. I have a 300pound p/plate, and a 200mm driven plate.
The factory ones are just too small for a serious motor. It works out MUCH cheaper to go bigger, than have a heavy p/plate made.

Thanks guy's, I have ordered a Exedy heavy duty clutch kit today, and should see it tomorrow.

All pretty and pink.

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Arrgh!!! i wish i had known that when i had my flywheel made up!! The guy asked me if i wanted it drilled to 200mm and i said no cause i didnt want to have to use exotic parts.

So there is an off the shelf part that fits the datsun gearbox, and 200mm in diameter!!

Damn it damn it. Ahh well perhaps Ill just try this out and if it cooks, then change the fleywheel then...

It's not an exact match to the p/plate, but it's very close and gives you more surface area.
A work of warning though, the A series compatable driven plate I was sold had a large centre protrusion on the flywheel side. This fouled on the heads of the cap screws which hold my flywheel onto the crank. (Only just on one corner of each one) As a result, my driven plate was prevented from clamping up 100% in the inner half of the linings. So when I was being really mean to it, (doing stand stills in 3rd gear, with people in the back seat) it would slip a bit.

My racecar uses a Toyota clutch (200mm)
Worked a treat
20 thou step on flywheel for extra free clamp

Yup. I bought an exedy replacement clutch for my A12 when i converted it to manual and am currently using the same clutch on the A15 engine.