Replying to Computer question...recomend me baller notebook

Pretty simple. I am a Civil Enngineer, and will be doing some side jobs in addition to my full time job's workload. I need a laptop that can run AutoCad, solid Works, and other modeling software, and run it well.

A large screen is preferable, as is 500+GB. If there is a cheaper laptop that only needs 1 or 2 aftermarket parts to make it a baller laptop for fairly cheap id be interested.

And links to locations for buying would be awesome as well.