I have several 2A and 3A ribs, along with an M38, none of which are in great shape. I have the opportunity to procure a 3B tub locally that is in comparitively awesome shape... my question is, is everything the same on a 3B tub, besides the cowl area? To the naked eye it seems like there's just a small panel to raise the same 2A/3A cowl up about 3" to become a 3B, along with a taller firewall. Kaiser Willys lists side panels for all civilian flat fenders under the same part number... Would it be a good move to use this tub for my build? I will be cutting, stretching, and adding metal, but I definitely prefer the looks of the 2A/3A. Thanks in advance!