after market 1/25 leaf springs and 'hefty' axle

[fiatboy]

Hello.  I am building an incomplete kit of the 'General Lee'.  The axle looks pretty 'weak'.  Where can I get something better?  Thanks

[Casey]

There are a few modern era Revell Mopar kits which would provide much better suspension pieces. The '69 Charger R/T and/or Daytona, and '68 Charger R/T would be my parts donor suggestions. In fact, dump that MPC Charger  entirely and use the Revell '69 as the starting point.

[Force]

The Mopar muscle cars had two rear ends, a 8 3/4 inch and a Dana 60, most of the automatic cars had the 8 3/4 inch and the manual cars had the Dana, it was a truck axle and a lot beefier and withstood the punishment better...but it's a heavy beast.
If you are going to build a NASCAR "Cup" Mopar from the late 60's and early 70's  you need to use the 8 3/4 inch rear end as it was the one they used before all went to the Ford 9 inch they still use today.
Both these axles can be found in many kits and at least the Dana are done by the aftermarket.