Its definitely cheaper from eastern states.
BUT if the car is modded, you still have to get it back to stock before you can get it thru the pits.
If you calculate the labour to take the aftermarket part out then put in stock parts(purchasing stock parts?) and fit it back aftermarket parts in, you still come back to the same lump sum as getting a car locally.
One of my mate decided to do this, huge problem was getting the parts out. Did all the right way (He did himself to save money). When taking out parts, he broke the nuts. Then he couldnt drive the car. Got it towed to a workshop and pay alot more to get it done.
End of the day, its still up to you, if you got the time and patience go ahead!
Good luck.