Summo Springs are Super!!! on my E450 Shuttle Van
2005 Ford E450 6.0 Diesel; 15 passenger shuttle van that has a wheel chair lift. I also installed the front springs. Since I'm not carrying anywhere near the payload of 15 passengers, the van/bus rides hard. It now rides an easy 60-75% better; road sway and even straight road travel due to irregular pavement resulted in less hard thumps. I also updated the OE shocks to Blistein HD.