The M-46 on the lft looks like one of the Turkish Brigade's tanks during the Korean War. They are only ones I know that used those cages designed for anti grenades etc. I'lll have to do some looking in Dick Hunnnicuts book. The Engineer tank was only a prototype that never got into production. For a VTR we had the M-74 until the M-88 came out and an Engineer tank was never developed on the 46 or 47 chassis. I believe the gun used on that was the same as the M-45, a 105 Howitzer. Never saw one, so will research that also. If you're doing a M-46, the entire back deck has to be rebuilt. The 46-47 had a totally unique back deck based on the Continental V-12 engine and outside muffler system. I'm waiting for the conversion kits that are being designed now. Want to do a variation on the HL Pershing, do an m-45. Only 187 made and used only in korea.
Bill