I'm 'passively' looking for a set of GT40 heads and intake. Not sure if I'll go that route but still haven't tracked down that AF leak but if I find I have to pull a head to fix it then I'll likely upgrade and probably go with a small cam upgrade. Nothing too wild. Would try to stay under .500 and under 220* @ .050. I did pick up a used 65mm BBK TB and BBK CAI but haven't put those on yet.