Based on parts I've been screwed over by: Buy ZZP reman stock heads or CNC ported heads.
Also buy a new balancer. ZZP has some nice options there as well.
Then hunt down a gen V with lim, valve covers, and the other brackets/pulleys.
Pickup a set of L67 injectors or LS3 injectors if you plan on staying on the stock pulley.
Though L67 injectors are going to be old, and gummed up by now. Might save future headache buying something newer.
If you plan on going any further might as well step up to ZR1 injectors or siemens deka 60s.