4x4 posilok kits
 

was wondering if anybody has any experience with posikok axle engagement kits from summit racing for the w/model trucks

I have not used them, but I do know about them. A lot of guys that have vacuum actuated 4x4s will replace the front actuator with a cable system. It is easy to use and there is no wondering if there is a leak. If you have a problem with your vacuum actuator now, this is a great upgrade/fix.