Hi There CP !!
Gearbox should be very easy, remove floorboards, disconnect driveshaft, speedo, handbrake, gearstick etc, remove the four bolts that hold the gearbox to the bell housing sit inside the car, with legs either side of the gearbox and slide rearward. I have had my gearbox out 3 times in the last 3 months (don't ask !!!) the gearbox should NOT hang up in the clutch area.