Sounds a lot like the IFVL, a much-modified M113 Command & Reconnaisance versions of the M113 Armoured Personnel Carrier [Known as *Zelda* in Israeli service] of which there's also a very interesting stretched version, AKA the *M113A3+*. The Germans even came up with one mounting a modified M101A1 105mm howitzer....
The sloped rear armor of the M113 C&R seemed to offer at least some improvement over the M113's *shoebox* ballistic profile [an AK47 round would penetrate an M113's aluminum *armor*; I once knocked a hole through the side of an M577 *Highboy* S2 command track with an axe while cutting close-in trees for camoflauge....
The Italians, among others, used the M113 C&RV, and the Canadians, [*Lynx M113 C&R*] Dutch and Australians played with them a bit and used them in specialist [recon and combat engineer vehicle] applications. And the US M113A3 *Gavin* *Block II* APC isn't too distant a cousin- there was even a much-modified M113 variant mounting a Sheridan turret. The Australians used the turret of the Saladin armoured car, mounting a 76mm gun, said by the Diggers to be quite effective with canister ammo against troops in the open.
The M113 CRV was sort of a hotrodded bash-together, but was at least an improvement over the M114A1, notorious for throwing its one-piece *rubberband* tracks, a variant of which are now fielded for the M113 family, hopefully with more success. And the worst fault of the Sheridan was really that it was neither recon vehicle nor tank [funny the Marines never took advantage of its amphibious capabilities- or maybe they knew more about that subject than I do....] though the Sheridan was maybe a better substitute tank for the Airborne units than nothing at all. But they could be heard coming from about 3 miles away; as a recon vehicle there are a LOT better choices....
