I was talking to a shop guy today and he said 2 things to me that I question. 1) the Ally 6spd behind the lbz has upgraded clutches/gears/internals from the 5 spd found in the lly's. This makes it tougher in stock form. and 2) With a Trans-go Allison Jr. valvebody upgrade kit the stock Ally will handle 500 rwhp. For the relatively inexpensive price of the kit it seems worth it to me to get it. I'm kinda at the top for reliable hp through the tranny now with maybe 350? rwhp. I'd like another 100 at the wheels. What do you think?