Bought these on EBAY last night.
TECH Enthusiast
Joined: May 2004
Posts: 549
Likes: 0
From: St. Peters, MO
they are def an improvement over stock. However, from what I have read the ports are smallish as are the valves. If you want max performance you will still need to get them ported and have a healthy cam to go with. Def...not just a plug and play. 800 bucks is a deal tho. Come to think of it I got my LT4 heads for 475 shipped tho....damn I love EBAY. 