polo engine, gt mpi

dunno if anyone has fitted a polo 1272 engine (facelift, mpi 1993), i have got one and a 1.1 golf. will the engine go straight in if i change the gearbox mount (wanna use gt box 5 speed) or am i looking at changing it to 'big block' left mount? im lucky as in i have full car (runner), engine, box, loom, ecu etc. i have the black stripey interior too, looks nice, what would i have to change to get it in a mk1?
cheers,
paul