it was mostly used in g bodys(el camino/malbu/monte/regal/g.n/granprix/cutlass 82 up 88
and in some b bodys(so I'm told)
when build right it's strong.. the monty SS and gn got some better parts from the factory... but most rebuilds for hotrods add these to the rebuild..
like every trans it has a few weak spots that show up at 350hp and up..
these get addressed in a rebuild if you know you're gonna hit it with some power and/or slicks...
it's not as strong as a 7004r stock.. but the 2004r has better gearing..
the 7004r lived on as it's first gear is so low that it helped the general use taller rear gears.. that and the 7004r was in more vehicles than the 2004r
if your gonna jack rabbit around.. add the extra g.n. type upgrades.. if just a cruiser you'll get on every once and a while.. it'll be fine with a normal rebuild and a shift kit..
note.. you MUST set the t.v. correctly... it's not hard to do. but if you don't it'll kill the trans in short order..