Ive got a 97 mk 3,in origional standard condition,The car in mint in every way,with no faults at all,but the last couple of days its been getting on my tits,The gearbox is a pain in the arse,it is hard to engage into gears,and sometimes when you pull up to stop and put it into 1st,a few seconds after hitting the gear theres a loud metal clunk sound coming from the gearbox area?

So does anyone know what it is,could it be the lay shaft,or the selector,syncromesh,or is it just donald ducked??? also will it be expensive??As im contemplating selling the car or swapping it for a motorbike for the summer . thanks in advance for any help.
