[DaMoNe6969]

Is that all that was done was the headgaskets?? If so, than you've really got nothin to worry about.. If they dont change the oil after getting the engine re-assembled, than you should change it.. But I guess changing it again in a week or so couldnt hurt either

If the piston rings were changed than the engine could use a break-in period.. Try not to cruise at a steady speed, make small changes to speed and rpm.. so instead of driving 60, go 50-60-70-60-50 etc.. Dont use synthetic oil for about 2500miles..