F100cleveland

I installed my Funnelweb over my Christmas break from college did it without touching the heads. Well, I ended up getting a set of Port Stuffers and was wondering what you guys used for bolts to hold them in? I know the trick about installing them dry and seeing where they need extra epoxy, but what about the bolt size? I planned on using a bolt with an allen head on it and drilling a hole in each one so I can safety wire them for extra insurance. Just wondering if anyone has any 'tricks' they'd like to share on how to do this? Thanks

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1982 F100 2wd-408c CHI 3V 225cc Heads, 3v Intake, Pro Systems 1000+HP carb, 260/266@0.050 w/ 0.694/0.697" lift solid roller, JPT Rollerized c6 and 5000 rpm converter, 4.86 gears and S&W Ladder Bar kit with QA1's all the way around.
7.976@89.90 mph 1/8 mile with lots of bounce - with old engine and suspension(should be greatly improved)
1982 F100 408c 3v

4vxc

from there site

http://parkerracing.com.au/tongueinstall.html

buzz

all I did was used 1 tec screw. (self drilling). I just screwed tec screw in from bottom and through tongue. What hung out through tongue I just ground off with the die grinder while I blended tongue into port. Saves having to drill and tap them.
They won't fall out, even if they could they can't go any further down the port.