Sorry. I'm not very experienced with messages on the board. I just found your request. I decided to just change out the wheels and tires right now. Gary Wheeler at MorRyde actually told me that he thought 8K axle was overkill for my RV and would make the ride rougher. I am still interested in the 7K suspension but I'm going to wait until I have thought about things a little more. I also live in Arkansas so shipping probably would've been a problem anyway. Again sorry I didn't get back to you sooner.