Clunking Gearbox

[anomaly]

when i drop the clutch a little at low revs i get a kinda thumping sound around the gearbox area (especially in garage when its quiet and stuff echos)

when i drop the clutch a LOT at low revs a get a huge thumping sound from the gearbox which makes the car shudder. sounds like the gearbox is moving around. this is all fine, cause i dont normally drop the clutch, but during slightly aggressive driving its noticable

also when the clutch is out and in neutral i get a faint sound (like throwout or input shaft bearing problem, may be unrelated). also the car is new to me, and i know that the previous owner replaced the gearbox mount with an aftermarket one. its a stock 1998 33 gtst 40th anniversary

i drive like a grandma everywhere and dont do too many fulleh sick skids uleh so its not cause by abuse on my part

any ideas i just wanna get it sorted so i dont feel guilty giving it a squirt

thanks

[1TUF33]

sounds like a broken mount man

[Brocaine]

Are you getting a lot of movement through the shifter?

[anomaly]

Are you getting a lot of movement through the shifter?

the shifted seems fine, when it does the big clunk thing i cant feel anything thru the shifter