Hey all, looking to do a cheaper upgrade to heads and intake at the moment for a little more power while I save up for a stage 2 trick flow top end kit. In the meantime I was thinking of going with a tfs2 cam and junkyard gt40 heads and intake- was wondering if the p heads would be best and whether or not I should get the heads with the internal egr or the heads without. Also looking for advice and how to tell the difference between the ps and the regular gt40. The final thing I could use some advice on is what years and models I could pull these off of and what I would need to do to them to make them work. I appreciate all advice in advance.