I'm filling my own request here as I managed to find it kicking around somewhere. The save will load and pop 3 achievements when you load the career but I am not sure in what order as I had 2 of the achievements already, I,m just going off memory. All the sleds are unlocked so the double back/front flip achievements are easier.<br />
here are the 3 achievements that will unlock:<br />
Pack Rat - Unlock all unlockables in career mode.<br />
Sting - Collect $50000 in career mode without spending them.<br />
Hoarder - Unlock half of all unlockables in career mode.