From the Datsun1200.com Classified Forum - Posted on March 3rd by PJZ.
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FS: NEW 76mm JE Forged race pistons & USED 74mm Venolia
In the shop I found the following Datsun 1200/A-series race pistons:

(6) NEW 76mm J&E forged, wedge dome A-15 race pistons. $USD 350 + shipping. NOTE 1: Only have NEW rings, pins and clips for ONE PISTON. You will have to source the others. Easy, as they are common rings. NOTE 2: These were made by J&E with a 0.300" wedge dome, then 5 of the 6 had the dome machined down. You need to machine the 6th to match. NOTE 3: These are made with a shorter compression height for the A-15. They can also be used in the other A-series engines.

(7) USED 74mm Venolia, forged wedge dome A-13/A-14 race pistons, with pins, used rings and used teflon buttons. $USD 100 + shipping.

Peter
Email is best. PeterZekert (at) Juno.com

I haven't done it myself, but it was discussed in 78mm 1567cc pistons

Can you tell me more those justy piston? It make easier to ask those pistons. thanks.

Yes, some guys fit Justy pistons, but they need top be machined to fit and the block machined too.

Another car pistons useful?

For wiseco they are not a stock item. They are a custom item, about $100 USD each. You specify the type you want (flattops, dome tops, etc).

Hi!

I am starting to build new race engine my racer, but here in finland pistons are were diffult to find. Does anybody have some wiseco order number or tips any pistons what i can use?