How to remove the EGR valve? on 1991 Lincoln Town Car

There is not enough space to get to the mounting bolts, especially the one towards the front.
What parts need to be removed to gain access?
Can it be accessed from underneath?
The car is in mint condition and the only code that I get is 332 and it failed the e-check.
In the last two days, it also started sounding as a light misfire, during acceleration, that I believe is attributed to the EGR, as it has never done it before and there are no other signs of malfunction.

Asked by for the 1991 Lincoln Town Car
I will send instructions to you from the address you posted this question from.
Thank you.
I sent you an e-mail reply.