I need to install a microwave spacesaver above the range. What kit would I need to purchase to install the microwave (GE brand) and also if it is to be attached to the bottom of the cabinet with the rear being attached to the sheetrock (wall) what would I need to set up the exhaust?

Here's what normally comes with the microhood when you purchase it - 1) Two very long screws, nuts and washers that attach the unit to the bottom on the cabinet and that screw into the two screw holes in the top of the microhood 2) Perhaps, but not always, a metal frame that attaches to the sheetrock behind your range to mount on the wall before attaching the microhood to the wall 3) A piece of paper (I forget the exact name) that helps you mark exactly where to attach the back of the microhood directly to the wall on the metal frame that goes between the wall and the micrhood. 4) a 110V cord with either prongs or no prongs on one end ----------- depending on whether on not your old range hood/vent is exausted to the outside through a vent pipe, you will need (or will not need if not exausted to the outside), a metal vent pipe adapter to adapt the approx usual 10 in 4 in rectangular exhaust opening in the top of your new microhood to perhaps what is a round outside exhaust pipe. This adaptor can usually be purchased from a heating/ac contractor or supply house or perhaps even a retail outlet such as Lowe's or Home Depot. Most microhoods sold today can either be vented to the outside or not. If not vented to the outside, you will note that the exhaust normally flows out through vents just above the microhood door. You will need either an outlet to plug the 110V cord into or I believe, though not sure, you can wire direct to a 110V source by using electrical connectors.

RichardBondMan has it. The word that escaped him, was Template.
You will have to drill a hole through upper cabinet for electrical cord to go through.
It can be located with the template.

I need to install a microwave spacesaver above the range. What kit would I need to purchase to install the microwave (GE brand) and also if it is to be attached to the bottom of the cabinet with the rear being attached to the sheetrock (wall) what would I need to set up the exhaust?
Do you already have the m/wave?

Not if you get an over the range microhood 85032. Has a vent in it and don't need to exhaust it outside...
You need a plug in the cupboard or behind the microwave...