AH - another from the Spokane area. So your 2018 didn't come with a FEL & bucket. Well - either Coeur d'Alene Tractor or Adam's Tractor will be able to help you with FEL, bucket and bucket grapple.
My
M6040 came with FEL and 72" round back bucket. I purchased a Land Pride GSC1560 grapple and WR Long third function valving. The dealer installed the grapple and valving. The grapple is very heavy duty - 820 pounds. I use it almost exclusively to move large rocks and big chunks of my Ponderosa pine.
Give you an idea and reasons I purchased what I did. The front tires on the tractor are set at 67" outside to outside. The makes the bucket a tad wider that the tires and the grapple a tad narrower. I chose the 72" bucket - its heavy duty also - because the next size bigger was 84" and I don't need that. A full 72" bucket of gravel is more than enough weight to be playing around with out here it the pucker weeds.
The grapple - mine is what is called rock & root grapple. Its made of very thick, high carbon steel and is pretty much indestructible - if you are half way reasonable. I've had it four years and no dings, dents or bends. I choose the rock & root style because that's what I use it for. Large rocks and big chunks of pine logs.
I have VERY LITTLE brush here on the 80 - only small patches of buck brush. So I don't need the brush style grapple.
Then there is the width - some like wider grapples - some like narrower. I chose 60" because its plenty wide enough for any rock or log I'm going to handle. Besides the next size - 72" - was almost 1000 pounds.
My FEL will lift 3300 pounds with the grapple on the FEL. So...its actually lifting - 820# plus 3300# ---- 4120#. Last year I lifted a chunk of my big P. pine that the log index said would weigh 2850#. I raised it just high enough so the bottom of the grapple didn't leave drag marks - no higher. I was out on the property and didn't need any stupid accidents moving this chunk. I would have lifted it higher if I'd have been on my driveway where the ground is hard and stable.