I have for you a Stihl MS460 that I built out of all OEM parts I had on the shelf. The only aftermarket parts are the top covers, air baffle, brake cover and the bar nuts. It is essentially a brand new saw.
I ran about 3/4 tank of Chevron Supreme mixed with Stihl HP Ultra oil through it cutting some softwood to test for functionality. Everything on this saw works as it should and it will require a break-in period like a new saw.The last picture is the actual internal mechanical parts used. The fully adjustable Walbro HD-11 carburetor is adjusted for 4000' elevation so if your elevation is much different you will need to readjust or risk engine damage. Also has an old school dual port muffler from a 1995 model 046. The item "Stihl MS460 Chainsaw Powerhead/ 044 046 066 036 MS440 MS660 MS360 MS461" is in sale since Tuesday, May 22, 2018. This item is in the category "Home & Garden\Yard, Garden & Outdoor Living\Outdoor Power Equipment\Chainsaws".
The seller is "sly177" and is located in Pollock Pines, California. This item can be shipped to United States.