4th gear is the weak point but I never drove it faster then 105ish and when I did I always had it in 3rd to avoid the 3-4 shift too. I know that one of these days I'm going to have to have the trans redone, but I'll do it when it finally breaks. I think the thing that's saved me so far is that I don't have sticky tires for it right now. I did do one or two 1-2 shifts and all of 1st gear was useless before it shifts by 50-55mph. Tires spin like crazy. Even when I was NA my tires would chirp shifting into 2nd.
