I agree with Brown, However Ive never seen a bad set of gears..others may differ. So any brand would be good for me.
As for what to do with the 4 banger. You could spend a grand or two and hop it up with head work, camshaft and rockers and a complete exhaust system to the back of the vehicle.. It should run like a bat flying out of hell.. BUT It won't run worth a crap unless you are on the track! Driving like most here do and I suspect you do, the thing won't have enough power to pull a sick whore off of a potty!
Your engine is designed to do what we do with them. Use it like it is and it will serve you well.
Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />