I have been working on my Coupe project for years and I will be collecting my engine next week. I used 83mm Wossner pistons and these Eagle conrods Eagle LD9

I will post pictures next week.

The Eagle conrods are a near match for the 20VT and we had to increase the big end diameter by .20mm. We also used King XP big end and mains bearings instead of the standard Fiat units.

There used to be a huge argument on this website about the big end and gudgeon pin end width differences between the standard 20VT conrod and the forged ones and how it influences conrod/ piston centering. The Eagle rods give you the option since they are as wide as the 20VT standard piston.

I took Stichl's advice and modified the head to accept M12 Head Bolts over the standard M10 units.

Where to buy:
Wossner Pistons - I bought them in the USA, was cheaper than EU suppliers.
Eagle Conrods and King bearings - www.raceeng.com, ask for Rob.
Head Bolts - Off a Renault, Head Bolts