Ls engines are great platforms and cookie cutter engines for the most part. I picked up an complet ls2 on Craigslist for 800$.. Came out if an 07 tbss.. only wanted it for the block.. Sold intake 150$,heads 360$,rotating assembly 440$ and I still have the injectors,oil pan to sell..Lq4,lq9 will be your best bang for the buck