when i drive my 91 ls 5spd it makes a gental tapping when the cluch is pressed in (i can feel it on my foot) and when in gear i feel a vibration comin up the shifter (the cars shifter not mine....) like when some1 scratchs a chalkboard. is this normal for a 197k car or should i get it looked at.

and also i have a small crack in my radiator or 1 of the hoses so im getting a aftermarket 1 and suggestions on any good 1s