its at-5 have not checked bolt pattern. I'm not thrilled with it being at-5 the one in my streetrod died on me on the interstate but hey I only paid 20 bucks for it and it lasted 20k so cant really complain., plus gy came along unloaded his street rod from the trailer put mine on and took me home for free. then i bought a tko tranny
its basically the same t5 as the older 5.0s used the rear tail shaft is different and so is all the electrical hookups, as well as the shifter comming out of the back of the trans and not the top. Also the bellhousing for the 6 is pathetic im used to the 5.0 bellhousing. Other than that ya there the same lol