e6's
I put some mildly ported E7's in my 86gt, made big difference, the e6's have to be worked by someone who knows e6's, or you would not get much gain. Its more economical to go to e7's, I thought I would loose some torque down low, but even with a cobra intake it feels like I have more bottem end power I definetly have more top end. The power band is much wider now. Do a search on ebay, there was someone selling brand new e7's a while back. There is always someone selling ported e7's on the stang sites. My other upgrades were svo 1.6 rr, ceramic headers, note I had to shim rocker arms after e7's had valve job. Before I went to this set up, I put a 87 upper on, with 65mm tb, pullies, with the e6's, it dynoed 201rwhp, 281rwtrq. I had new set up dynoed before shimming rr's,with 3 loose plugs, oil in intake, it did, 219rwhp/ 280rwtrq, after shimming it felt a lot stronger, so I think I'm at 230-240rwhp, 290-300rwtrq range, if you go with tmoss ported lower and e7's it is a great upgrade for a good price.