This might help. When doing a clutch on my '55 Willys Custom the mechanic said my transmission mount (Rear Engine Mount) was in poor condition, but usable. Not having a replacement, we reused the old one. I started searching knowing what it looked like. An Ebay ad for a 1955 Kaiser Part # 207407 looked the same. Ordered one. The item arrived and a close look moulded into the rubber was the number 734969. Now, it's twenty below here in Maine so I'm not installing right now, but I'm real sure it will fit. I don't have the original Kaiser listing, but my 1954-55 Willys Parts Supplement shows in Group 10-23 Part # K-734969, Insulator, engine support, rear assembly (Standard). I'm just assuming the K prefix shows Kaiser origin. This part is frequently in need of replacement and several listings show it available. One listing also says this fits a 2wd pickup with L-226. I don't have the listing for Hydramatic models as it doesn't show in my book. If you have a Kaiser or Willys car with L-226 Std. or OD. I think this part can help.