As far as the gaskets and drilling the header holes, I didn't go that route. I chose to get the caulking-sized bottle of Red RTV for $12 and just use that on my header flanges and turbo T4 flange. Never leaks, takes the heat, and I don't constantly scrap gaskets. Per my above post, I did a few sets of head gaskets and have removed this kit a couple more times for various reasons and it made me appreciate the RTV. Those remflex gaskets are expensive. lol I used all the supplied V-band clamps, wastegate/bov, etc. from the kit and all has been fine with them.