I have a SLP head for sale for a 800R motor. This will not work for an E-Tec. Ptec only. It is their 3-6k elevation head. It has removable domes so you could increase compression if desired. The compression on the head is 1:12.8. It is not a lot more than stock but gains are amazing. Gains from the Website say 6-11 HP. Head is in great shape. It has about 800-1000 miles tops on it. Retails for $374.95. Asking $220 shipped OBO.