I have been having problems with my axles in my 91 HF. I did my swap about 2 months before hasport came out with their hydro-cable conversion, so i am using a 91 LS transmission. So right now i am using a 91 LS tranny, and 91 LS axles. The problem is that i have a bad rotational vibration whenever i beat on the car, and when i bang gears.

 

what kinda shaft u using..?

should be able to use the 91teg axels if you have the right shaft !!