I just installed a 347 in my 82 mustang but the stock transmission isn't holding up of course. I was going to purchase a tremec from summitracing but money got a bit tight. I was wondering if I could use t5 or t45 from a 95 up mustang?
I agree with V8only, the Tremec TKO 500 or 600 is your best bet,
The 94-95 T5 transmission input shaft is longer than the pre 94 T5. That means if you use a 94-95 T5 that you need the 94-95 bellhousing. Or you can swap the input shat from your old T5 - IF it has the same gear ratios.