What Harris Magnum Frame is this

[BasilBrush]

Sadly not my bike but wondering what Harris frame it is ? Good olde GS 1000 engine, thankfully not been swapped out for say what now!? one (some might disagree).  Had a GS1000 years ago and after 20 years of ownership , stupidly, sold it. Always liked these frames , they show off the engine so well. Looks like proper racer

 

[Dezza]

Looks like a Magnum 2 to me. Tank is Mag2.

[Fazz711]

Also think Mag 2

[BasilBrush]

Thought it might be an earlier version. Looks well put together 

[clivegto]

Looks like a Magnum 2 but could very well be a Magnum 1 as its got the early GS motor. There are not a lot of differences between the mag 1 & 2 in the early days.