Instruction: Analyze a question and its supporting document. Predicting answerability based on the information provided in the document. Output yes if the document contains relevant information to answer the question, otherwise output no.

Input:
Question: will these fit 78-82 mercruiser #1 drive
Document: I had to replace my 24 year old sending unit. I purchased this one and it was a perfect fit. Instructions were very precise on how to calibrate it to the gauge. Very good quality. I would suggest for anyone needing a trim sending unit to purchase this one.
We had prompt response from the shipper. The parts worked as well as anyone could hope for. The price was competitive.
My boat had the Port side wires broken when I got the boat and the UP switch would not work on my remote throttle. Well the next year the starboard side broke. So I replaced my bellows and this at the same time and now my switch works again and my gauge. This installed great and is a OE part, witch is great in my book for any repair. I would recommend this to anyone replacing bellows.
I installed these about 3 months ago. They worked as advertised, and have held up really good with a boat that is kept in the water.
Easy to replace and wire into existing system. Just had to play with it a little to get the sensor to read correctly, simply follow the instructions included.
Answer: no