As far as the shift indicator plate goes,replacements are available to comply with the trans you select.Almost any Chevy aftermarket
dealer(Danchuk,Year One,CARS,etc.) sell them.You'll have to remove the steering wheel, dismantle the upper part of your column(maybe), part of the lower dash(maybe) and the gearshift jacket to switch it out.The "maybes" are because I can't picture the column and I'm giving you general info from my experience.It's really not that hard especially if you have a shop manual.
