[88t-top5.0]

I have a 1988 GT with a t-top roof. It's a 5 speed and mostly stock with almost 188,000 miles. I have a few questions...
1. I have a stress crack in the frame by the windshield. What can I do to stiffen the structure and prevent further damage?
2. I want my car to accelerate better, so I'm thinking about new gears. I'm pretty sure I have a 2.73 rear, and I bought 3.73 gears for it. I do a lot of highway driving, so will the 3.73's be ok or should I swop them for 3.55's or something lower?
thanks for the help


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1988 GT 5-speed
K&N filter
2 chamber flowmasters