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How can I add 125 HP to my 89 gt can someone give me any ideas???
If you want to keep your motor N/A I would go with a nice top end kit (trickflow, Edelbrock, AFR) along with upgrading your Rocker Arms, Throttle Body, MAF, Fuel injectors , headers and exhaust!

This is what I did and going from stock dyno numbers (185rwhp) till now I gained 125 rwhp and dynoed at 310rwhp
 

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Trick flow top end kit for sure. A magazine just did a review of it on a bone stock 90 GT and it had around 330 rwhp up from 205 stock. Definitely the route to go.
 
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