I have a two speed wiper motor and electric washer pump set up on my 70 b body, my wiper motor went out and i was looking to replace it with a aftermarket unit from auto zone. However they do not sell a unit which has the setup for the electronic washer pump should i just bite the bullet and install the new style unit? I dont have the washer bottle currently but i thought about it soon. What other options do I have besides the 3 speed switch over thats expensive.