I drive an 85 300D turbo (California).

Ok, I have a 240 manual transmission and the needed parts for the swap available to me for little to no cost. I need everyone's input on whether or not I should go for it:

1) I understand that the 240 auto cross member eliminated much of everyone's vibration issues. However, how much is left? I don't want to be badgered by vibration.

2) Has anyone used the stock 300 naturally aspirated manual transmission flywheel with their 4 speed swap? Did you have vibration troubles?

3) Did anyone try the previously proposed modified (made heavier) 240 flywheel or the flywheel from a gasser W123?

4) I do regular towing of firewood, compost, and random things (1500-2250 lbs.), will the new transmission and clutch be up for this task?

I don't want to go through the trouble of this swap to be anything less than happy with my decision to do so. I need experienced individuals input.

Thank you for you help in advance