Here's what you need to consider:
* Severity of the lift: A small lift (1-2 inches) might not require any changes. Larger lifts (3 inches or more) almost always necessitate adjustments.
* Driveshaft length: A longer lift often necessitates a longer driveshaft, or at the very least, a longer slip yoke. This allows for the increased articulation of the suspension without binding or exceeding the safe operating range of the existing driveshaft.
* Driveshaft angles: Excessive driveshaft angles can cause vibrations and premature wear on U-joints. You might need to use adjustable control arms or different length driveshafts to optimize these angles. Some aftermarket solutions like SYE (Slip Yoke Eliminator) kits can also help.
* Transfer case drop kit: A transfer case drop kit can help mitigate extreme driveshaft angles, especially on larger lifts. This kit lowers the transfer case, bringing the driveshaft angles closer to optimal.
In short, while you might not need a *completely new* driveshaft, you'll almost certainly need to assess and potentially modify or replace components related to the driveshaft's operation to avoid problems when lifting a 95 Jeep Wrangler significantly. Consult with a Jeep mechanic or experienced off-roader familiar with lifts to determine what's best for your specific lift height.