I replaced my gearlinkage on my Gli last year - £62.00 for the complete lot - took 2 hours to do - bugger when the engine is in place... - if you are missing gears - it more than likely the linkage isn't set-up correctly - and this can be fixed quick easy - better to replace the ball joint at the base of gear level and all rubbers anyway.
I would get the mileage checked though - it's very low - plus if it's got a clipper kit on it - more than likely it has rotten arch's - they go very quickly on the older models - check the MFA works and does it have 4 or 5 speed gearbox - the Gli always had 5 speed.
What year is that cab - that dash doesn't look right to me? I can check in my mk1 cab brochures for you.
