[Raulg]

My 87 Turbo is getting a new clutch installed.
The work is almost complete by an indy.
The plug end of the reference sensors are bad and have cracked.
The mechanic told me there is no way to reach the sensor at the bellhousing and that he will have to epoxy the plugs. He also said he would have to take everything apart to get to the sensors (bell housing, torque tube, etc. $,$.)

I rather get new sensors installed, if he can't may I can.
Are the sensors hard to get to them? Are they replaced from above or from below?
I read the Clark's Garage IGN-02 section but there is no mention of these sensors being hard to replace.

I posted this question on the 968 forum by mistake, so my apologies to those who may read this in its duplicate version.
Thank you for any advice you can provide.
Raulg