Ok guys noted of the info. Right now I can't get a picture to upload cause it's saying it's to big and I don't know how to make it under the 2mb limit. Yes I did install a 4 hole spacer but only because I had to move my carb up cause the dual line assembly hit's my heater hose on the corner of my intake. I changed over to center hung fuel bowls incase your wondering. My initial timing is 16 at idle with vacuum advance pluged off. Rev it up and its total is around 34 by 3000 rpm. I don't want any more timing then that cause it runs nice and good on 89 octane with no pinging at cruise or even if you smash it. I will try to google and see if I can find something to shrink my picture with. Will post back.