**2007 Redline Monocog Flight 26er **Help**

So ill be picking up a 2007 redline monocog flight 26er frame and forks this weekend and I wanted to verify the size of the parts that will fit this bike. Does anyone know where I could find this info? Ive looked everywhere and called multiple shops. Even if I had the bike in hand I’d like to verfiy my measurements to something.

I need to know the size of: bottom bracket (square tapered 68x115mm?)
crankset (?)
stem (31.8?)
seatpost (27.2)
headset (1 1/8?)

This is of course a single speed mtb but at times I’d like to run it with gears. 3-6 not many. And I was wondering if I could get a crankset that could be used for single speed and gears so I didnt have to have 2 different cranksets. With the rear dropouts I’d be able to use mountain bike tires or 700c. So I’d like to be able to run both on this bike without switching out many parts. If anyone can answer some questions about this bike please let me know..

Thanks.