Ari
Did you replace it with the motor together, i presume it's pump off and tap it out with a rod from underside and long nose pliers to pull it out the top.
When i fitted the MSD dist, i didn't fit the rubber hose back on and the car lost 3-5 mph at the weekend.
The only other changes since the previous meeting are a larger rad and i've changed the electric fan for a viscous fan.
Mick