Fitting Sparco Sprint into S13

[Barrett]

I just picked up a used Sparco Sprint off a friend for dirt cheap and I'm trying to fit it into the driver side of my S13 hatch. It came with the rail for a DC2 Integra and that's not going to work no way no how. But I figure I can still use the slider rails. Now, I was told by a shop that I would need an adapter <i>and</i> 240 specific rails. I thought they were one in the same, but maybe I'm mistaken? They also told me that this set up would be too high for a normal S13, and I could go with side mounts which would be lower, but still really high. I'm a tall guy, abour 6'3, but I fit in the car fine now and have some play for head room. I have yet to track drive the car and so I don't know if I have room for me and a helmet in there, but I would hope so. I read some people used custom fabed mounts, but I have no wear around here that does that. I daily drive the car so I haven't had enough time to see if the factory rails will work with the Sparco slider, or just use the whole factory slide assembly with modification. Does anyone know what I'll need to do to fit this seat into my car comfortably?

Here's what the bottom of the seat looks like, just so you can get an idea of what I'm working with: