Yea I replaced Valve cover Gaskets on my "92" L and My intake runner bolts are stripped!!! I could barely get them off I couldnt get # 2 off going from right to left and I wanted to replace the little gaskets because it really needs them!!! Well I finshed installing the front and rear valve gaskets along with sparkplug well gaskets. Now im worried because I had to reuse those old allen screws and the old gaskets as well. and now intake #5 has a stripped thread man I was bummed out!! Its about 97 degrees and the only shade I have is my hood. I installed #6. I turned car on and a good whistle from number 5 where the screw is stripped luckly its the outside screw I got the 1223 but the cause was obvious. SOOO what I did was I unscrewed the long philps screw from upper driverside (where handle is located on passenger side) and a nut that fits it, I pushed that screw through the intake runners hole and held the nut with a flathead screwdriver and some sealant to keep the nut from falling in the V of the engine well I tightend it up and it sealed. I turned the car on and it idled nicely. But I have a feeling that there are little air leaks because those gaskets are so old. I want to replace all those little gaskets and those old screws as well I just want to know what size are these I was thinking they were 1/4 20 but didnt want to take any chances. Does anybody know what the sizes are and What can do to pull the stripped allen head on #2?? I was thinking of tapping #5 but its kind of hard to fit a tap in there.