Put all that money towards an R32

http://www.japaneseclassicsllc.com/

 

If i were to do it all over again, i would just buy a clean Z with a blown engine (~$3k-$4k) then swap in a built, new, or a good used engine. My friends and i have found good used engines for $1000-$1500 + your core engine. That will get you into a good starting point for the "least" amount of money.