Upgrade the parts, keep the original stuff.
Dad's Scrambler has 4700 miles on it as of two weeks ago when I took it dove hunting. I've replaced the belts, added a Laredo grab bar, NOS white spoke wheels (originals were the stamped steel, which I still have with the 205/75 Michelins that came on it). I plan on putting new hoses on it next time I have it out.
The factory plastic valve cover leaked the day he brought it home from the dealership, so I have an aluminum cover that will go on it at some point.
I've got the AMC marked original belts, the original grab bar, and will keep the AMC marked hoses when I take them off. I will also keep the original plastic valve cover when I replace it, and putting the aluminum cover on only requires that I tap the two dowel holes on the driver's side of the block.
I have a lot of stuff I'm going to do to this Jeep at some point (when I get my '7's like I want them) and have been accumulating parts to add to the Scrambler when I do it. I've picked up 3.31 axles with lockers and one piece axles to go in it with 2.5" Rancho springs and Conn-Ferr stock length shackles (it came with 2.73's), a NOS AM/FM/CB, an OEM A/C unit, and a full length hard top that will go on it at some point.
It's a base model so I got OEM rocker trim and a Laredo steering wheel and NOS Laredo horn button to go on it as well. Going to put speakers in the dash in the factory location and have a Tuffy console that I'm going to put in, but I'm going to fab a rear bracket that uses the seat belt holes to mount the rear of the Tuffy so I don't have to drill. I have full length sliders (look like Warrior Product "Rock Barz") that I had custom made that sandwhich the frame so no drilling is required to mount them.
Other than drilling holes to add the OEM rocker trim and tapping two holes for the valve cover, NONE of this stuff will permantly alter the Jeep. I'm keeping all the original parts and the Jeep will be able to be put back to 99% stock if someone in the future desires to do so. I know I will NEVER sell this Jeep, and I want to be able to enjoy it during my life. If my kids want to sell it, I'm keeping all the original stuff and that should enable them to get top dollar for it should a collector buy it in the future. I'm hoping they'll have the Jeep bug and it will stay in the family.
Point being, you can make modifications to the Jeep without ruining it if you think about it before you start cutting and drilling. No point in having a vehicle if you can't do what you want with it or to it.
85 CJ7 258, borla header, Team Rush, MC2100 ,optima batt, Warn 8274, agr super box 2 & pump, T5 w/ B&M shifter, centerforce 2, superior 1 piece axles, warn hubs 2.5 in lift, 31" BFG MT
85 CJ7 258, A/C, T176, MC2100, Team Rush, Warn XD8000i, superwinch hubs, 3in lift 31" BFG AT/KO