There won't be any conversion because pretty much everything has changed, so to bring a current Mi2 up to EC spec would change pretty much everything
. The chassis, topdeck, shock towers, shocks, arm mounts, arms, front and rear hubs, front knuckles, bulkheads, diffs, layshaft, layshaft pulleys, CVD's, hex hubs... you get the idea
. If you want to put just a few things from the new car on the old car I'm sure you could. Such as the towers, but the geometry still wouldnt be the same as the EC because the arm mounts have been moved.