The frame on the 58 is a straight rail frame. The frame on the 70's drops in the middle. It would not be a simple bolt in application.
A 1974 Chevy Impala frame would work
there is no frame on a 95 monte, it's a unibody.
Under the car,Along the frame, under the drivers seat.
1st gen s10 frame.standard cab long bed is best.short bed 2 short
the 1979 el camino shares the frame with the 79 Malibu wagon and Malibu classic.I believe you can also use the 80 to 87 frame under the 79, but you cannot use the 78 frame under a 79 as it is a few inches longer. this is because Chevy used the Impala frame through 78 and then in 79 they switched to the Malibu frame.
Nothing would be a direct bolt on without fabrication.
Inside the frame, under the driver's side cabin.
under the drivers side on the frame
Should be along the frame under drivers seat.
The fuel filter is located under the frame under the driver side door.
Under the vehicle, bolted to the frame on the driver's side