It will mount but not without issues. You will need the new droop screws or the old ones will quickly tear up your chassis. But the new screws only fit the new arms. And the new arms only work with the new uprights. And the new uprights only work with the new spindles....starting to see why everybody is saying to just get the whole kit? I didn't even mention the center bones. No way your gonna be anywhere near $150. Just the chassis and body is about $130, then you need motor mounts, batt tray, servo mount, etc....
The 2.0 is a great car. If your on a budget, then just get the new shocks and standoffs. That will help a lot more than the chassis.