It turns out it's a 1998. In order to get the seatpost to at the right height, I'd have to use a 400mm with only 4 inches in. But I think the reach will be right for me.
I tried out a 96 17" rockhopper a1 fs and I had trouble getting behind the seat and it was really tough for me to steer, so I assume the reach on a 17" would be too long, but looking at those numbers, the 1998 tt's are the same length, and if anything the seat tube angle on the 15.5 would be steeper.
The dealer manual unfortunately doesn't have the rockhopper numbers in for comparison.
I tried out a 96 17" rockhopper a1 fs and I had trouble getting behind the seat and it was really tough for me to steer, so I assume the reach on a 17" would be too long, but looking at those numbers, the 1998 tt's are the same length, and if anything the seat tube angle on the 15.5 would be steeper.
The dealer manual unfortunately doesn't have the rockhopper numbers in for comparison.