HP 41C mod

[vk6ti]

Hi Folks,
Back in the early 80's as an electronic engineering student, I used my HP41C
as a "guinea pig", to change the capacitor on the board, to speed it up and put reed switch in the side, so we could use the card reader at normal speed.( after reading PPC mags) Subsequently I ended up doing a heap of them for fellow students on campus.
Meanwhile 30 years on, and collecting HP stuff and not really working on these type of instruments, so please excuse my ignorance on this simple question.

I was recently repairing a HP41CV, due to battery corrosion, and quickly noticed different board and architecture to what I remember on the 41C,
This is were I start sounding dumb, but were the models after 41C,
ie 41CX and 41CV, able to be modified in the same way as the original 41C ?

It's been a long time, since I have done this sort of thing, but only like to know
out of curiosity

Thankyou
Ray