I don't think you can beat the entire back wall of the van opening like on the SRW. If the idea is to put a raised roof on an older van this isn't a good option. If it's a new van being upgraded with raised roof this might be a good option to explore.
Leo Bricker, 73's K5LDB, OOIDA 677319
Owner, Panther trucks 5507, 5508, 5509
Highway Watch Participant, Truckerbuddy
EO Forum Moderator
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Support the entire Constitution, not just the parts you like.