You are right West.F1, these toe-in tie rods are a must have. I bought these for my 2 mz Modena and GT3 and the difference is huge. No more wandering in the straights, the cars go from point a to b like an arrow
There is a drag effect I guess if you use the 0.6 making the top speed decrease a bit so just take the 0.4 wich is a good compromise.
I dont think the alloy are worth the money, I am almost sure the plastic red ones are as durable as the original.