figure on 1000.00 to have a s13 motor placed into an s14, along with any other parts installed during the same time period. this includes
vlsd
fmic
clutch
you get the idea.

As for a motor to get? I would stick with heavy throttle. It's worth paying the $ in order to get a good motor and non bastardized harness. I'm not sure really where else to get a motor from. rion over on the east coast gets motors also, there's a few more. I believe fusion motorsports over here in palmetto florida can also get very nice front clips, which is one of the better ways to do your swap also. I have personally seen and dealt with a fusion clip before, they are nice.